Feature:
the feature set is great: songs, patterns, jams, live play, midi in to trigger from eternal pads, velocity pads and velocity can alter some of the sounds pitches slightly, lots of basic and usable patterns. more features than I was expecting at this price range. I felt this box had more stuff in than the competition. does not come with AC adapter, and no MIDI OUT. I'm still not sure if I can backup any of the patterns I make but have not read the manual.

Quality:
quality is equal to the price point. plastic is thick enough and fairly sturdy. it should survive a few bounces on a cement floor. has four, thick foam feet on it. rubbery pads feel fine and are big enough for two fingers same pad playing. I've read some people had pads fail, but I've only had this for a day and played for a couple hours - feel as solid as the rest, but I will take care to not POUND harshly on the pads

Value:
I did many comparisons and listenings before purchase. Even considered the BOSS DR-880, but the RT-223 impressed me more because of the sounds, ease of use and cost. I own a few high end drum machines already and just wanted some fresh blood from a company I didn't own anything from

Desirability:
I'm very happy with the purchase. Much happier than with the SR-18 I was waffling over for months and months. When I ran across this, I said to myself, "That's it! That is exactly what I want. Good, useable sounds, lots of patterns, and great price"

Sound:
Very good, clean sounds. I could easily use this on commercial releases. decent variety of various snares, kicks, toms, and many other percussion sounds. cymbals don't ring forever, but in many tracks that is a good thing. velocity can alter pitch on some toms and other sounds, but there doesn't seem to be multi samples per sound (which is understandable at this price), Still sounds great, no complaints, I will use it on many commercial tracks

Ease of Use:
the quick start info makes sense, jumped right in using it for fun playing it live, listening to patterns, messing with the bass sounds

Support:
unknown

Overall:
this is a great addition to my arsenal of sound devices. I could easily use this a the main drums in a full production recording, and probably will many times. I knew it had no midi out before purchase and also bought a power supply for it. it can run on 4 batteries also and I might mess with that sometime. my cost was $170 total. very happy with the purchase. I couldn't find any other units this good for this cheap. I've got other drum machines and just wanted a new toy. It delivered MORE than expected.

Feature:
Features are decent. I ordered the power supply and the foot pedal. The foot pedal really helps when I am playing the bass line on the keyboard. The power supply should come with the machine...that should probably be a predictor of the service to follow.

Quality:
When you pay $179, don't expect Fort Knox-type protection. This is plastic and rubber, so you handle it like plastic and rubber. Unless you're thrashing around on the stage, typical use shouldn't cause problems. I carry it around in the box it was packed in to protect the buttons.

Value:
Any better quality and I would expect to pay more than twice what I paid for this. For the price point, you get a decent machine with more features than you should expect for the price.

Desirability:
I am a part-time music professional with a music degree, so I expect a lot from my instruments. Not real sexy for a musician who gets paid to play. Might work as cheap accompaniment beside the pool, but can't pass off as the real thing in most arenas.

Sound:
Adequate sound for the price. The bass sounds are mostly cheap-sounding, with a couple of quality-sounding sounds. The drums are very good for the price. When run through a decent mixer, it sounds pretty good. When played with our small group (one keyboard, one guitar), it sounds great.

Support:
I am a patient person, especially when it comes to service calls. However, support cannot even be rated because it is non-existent. It took almost three weeks for an email response which just passed me on to another website which has not responded at all...and will not even load in my browser half the time.

Overall:
I thought I would not use this to capacity before I had more musicians (drum/bass), knowing there was no memory expansion available. However, I ran out of internal memory on this after inputting 4 songs, while the advertisement said up to 100 song storage. I could understand a variation based on useage, but did they really not expect somebody to enter a typical length song? Now I must delete 10 factory-installed patterns to input 1 of my own. That really made the machine not worth it. I'm back to no drummer/bass player anyway and out $179!