Feature:
Not a lot of bells and whistles needed or provided. However, for an electric piano synth, it's unusual, and very nice, to have the clavinet included.

Quality:
Does what it does as well as you could want.

Value:
Worth the price in my opinion. If you don't want NI quality, there are cheaper ones.

Desirability:
My opinion, if you've tried an NI product or two, you'll want their other products. They always sound so rich and good.

Sound:
NI products always sound terrific.

Ease of Use:
Very straightforward. However--and this is the main reason I wanted to write a review--don't even try it if you've only got a Windows system with 512 RAM. That's given as the minimum requirement, but don't be misled. It needs 1024 RAM, unless you want to use the very few voices that are designated as "small" or "medium" sizes, but then it's not worth the price. In fact, I'd go so far as to say that I don't think that NI's claim of 512 RAM is entirely honest, and perhaps the only reason to include lower quality "small" and "medium" voices is to be able to increase sales by claiming that it can be used with 512.

Support:
The activation process described in the documentation in my product is no longer supported, and if you don't have your music computer online, the activation process is cumbersome compared to most other companies. NI's activation procedure is getting out of control.