Feature:
There is so much you can do with this. Besides being able to record your own songs into the machine, you can store them on external storage via usb or even use the mm8 as a midi controller. The product doesn't come with any accessories, but I did buy both optional foot pedals.

Quality:
This thing is quality personified.

Value:
1,000 dollars is a pretty big price, but as with most things, you get what you pay for. Look around for deals. I've seen this as low as 869 dollars blemished.

Desirability:
I played it once and had to have it.

Sound:
The sounds are very good and high quality. The keys have fantastic action and are very expressive. This product gives you a huge sound bank to chose from.

Ease of Use:
The manual is very helpful, if you read it there shouldn't be too much confusion.

Support:
I emailed yamaha a couple of times regarding using this machine as a midi controller. They answered promptly and sent me a direct link to download a driver.

Overall:
I'm pretty sure this unit will last me a long time. There's so much to explore and at its price point it was the most "realistic" feeling synthesizer I found during a trip to a local music sore. If it breaks I may get a new one, it really would depend if I had the cash on had.