Feature:
Features above and beyond the normal piano touch/response were not that important to me. The touch, however, is excellent. It really feels like a mid-range grand piano. The only thing I would add (I'm spoiled - used to playing Steinway Concert Grands) is the quick-return keys. On a Steinway, when you lift the key halfway up, you can feel the mechanism reset itself, so you can play the same note repeatedly at high speed. With passages such as the fast solo from Rhapsody in Blue, this would really make it feel like $100,000 piano. For those who can't afford 6 figures for a piano (neither can I!), the graded hammer action and variable touch (soft, medium, hard) make this a GREAT feeling piano to play. It comes with the obligatory 10 voices or so, can record a couple of tracks (it would have been nice to record more, so I could accompany myself without having to re-record each time I change pieces), and has lots of demos. The demos make some nice background music, but really if you want to listen to piano music, a CD costs a lot less! The MIDI features, RCA audio jacks (put it through your amp system!), dual headphone sockets, matching bench, and 3 pedals really round this piano out. I just REALLY wish there were clips music books on the stand. Come on, even the cheapest uprights have those! It makes it VERY difficult to play music out of the book they include with the piano, let alone larger books. I couldn't bring myself to take 1 point off from the score for this, but it was very close.

Quality:
The wood finish looks excellent, and really fits in with the brown leather couches in my living room. Most importantly, though, the piano is sturdy. You can bash out Rachmaninoff on this thing without having it wobble and tilt under you. Even the included bench (which looks a little weak at first) holds up very well.

Value:
Definitely worth it. It strikes the best balance between features (excellent feel and response, sturdy quality, great sound) and price. When you're thinking about getting a Yamaha Clavinova that costs $600 - $1500 more, just ask yourself if you're actually going to USE what you're paying for. I surely wouldn't. On the other hand, I wouldn't have paid any more than I did for it, as an extra $200 or so would start to look expensive.

Desirability:
Excellent, excellent, excellent. I needed a good-looking, good-feeling, good-sounding piano, and I got it. Plus, all the extra bells and whistles are just icing on a delicious cake.

Sound:
The sound is probably the last reason I bought this piano. However, I was pleasantly surprised that it sounded excellent. I think they sampled the sounds from one of their own grand pianos, and you do get a sense of size which is surprising from such a small machine. If you really want loud sound, you may want to look at some of the Yamaha Clavinovas, which have 40W (or more) speakers. There are some very nice little touches, like the "key up" sound for the harpsichord, which accurately reproduces the sound made when you release a key.

Support:
I have no idea about support, as I've not had to use it. The only thing I didn't like was that, while this piano is IDENTICAL to the CLP-120 (another Yamaha, but in the Clavinova line), the YDP223 comes with a 1-year warranty, whereas the Clavinova comes with 5 years. While I don't expect (or hope) use it, it would be nice to have.

Overall:
This piano is exactly what I was looking for. A great, authentic keyboard action (though not a Steinway), well-sampled sound, high-class looks, and lots of little extras that wrap it up nicely (bench, music book, MIDI, etc). I can play anything from Bach to Brahms on this thing, and it performs wonderfully. My one niggling annoyance is that they just didn't think to put music book clips on the music stand. It would have cost about 50cents, but they just didn't do it. Tut tut.

Feature:
Minimal sound bank and limited MIDI saving. Neither of those are expected in this type of product, though.

Quality:
Looks and sounds great right out of the box. I would not take it on the road, due to weight issues and difficulty maintaining the finish.

Value:
Best sounding and feeling digital in its class. And that's coming from a Roland and Alesis freak!

Desirability:
Looks great against a wall. Less good if it's viewed straight on--from a stage, for example. The back is a kind of particle-board material with a slit in the top for running cables and providing access.

Sound:
Sounds considerably better than the upright it replaced. Among the most realistic digitals I have heard, easily the best in the price range. Electric piano 2 has a nice Rhodes quality to it as well.

Ease of Use:
Very straightforward. Even a small child would have no problem selecting sounds, changing timbre or volume. More advanced features, like tremolo depth or volume each of the two voices in a mix require some digging in the manual.

Support:
Pass. Haven't needed it, don't expect to.

Overall:
I would recommend it to pretty much anybody who needs a piano and not much more. I cannot walk past mine without playing a few notes and I've had it for 18 monts.

Feature:
I like pure piano sound so I don't care much for sound effects. I do use the reverb effect which sounds great and gives the piano a bigger sound (You get four different types of reverb and can control the depth of each one). The half pedal effect is useful, but not exactly the same as you'll find on a grand piano. I was really surprised about the book of 50 great classical pieces you get and the practice feature built into the piano.

Quality:
So far this instrument has exceeded my expectations. Very attractive look and sound. Only had this for about 6 months and I hope it last for many more years. I really can't complain about the quality at all.

Value:
You get a lot for what you pay for. Seems to be a great substitute for an acoustic piano if you don't have the space or money. The Pay as You Play is an awesome deal. Monthly payments with no interest is unheard of. You also never need to pay a piano tech with this piano.

Desirability:
The color of the wood of this piano is part of what made me want it. That and knowing that it had the graded hammer effect. The touch turned out to be much better than the upright in the living room. I was skeptical of the sound because it's digital but it has really blown me away.

Sound:
I'm an audio production major so I'm spoiled when it comes to sound quality (hence the 8 stars). The speakers sound pretty good and get loud, but I like the sound better though high quality headphones. It has an output jack so you could probably get a really killer sound hooking it up to some high end speakers. Still a very impressive sound for something digital. I've worked with a lot of MIDI equipment and nothing came close to this.

Ease of Use:
Change the voices with a push of a button, no scrolling through a huge list of patches. Easy to dual-voice also. Playing the demo pieces is super easy. Nothing very complicated when it comes to using all of the features. Also very easy to assemble.

Support:
Haven't had to deal with support.

Overall:
Very impressive product from Yamaha. I was excited but skeptical about buying a digital piano, but now I know I had nothing to worry about. This one has motivated to me to practice more and allows me to practice whenever I want due to the headphone jacks. Great for ear training because it's always in perfect tune. Not to mention, I work for UPS and will tell you that this instrument cost A LOT more than $20-$25 to ship. I couldn't believe they were charging so little for the shipping cost!