I'm very happy with it. I think with any controllers you'll see reviews of people who love them and hate them. I think for your purposes, either would do, but having 88 keys is always nice.
When you have a piano-like action and you're playing something that is supposed to be smooth like strings or winds, then the velocity it takes to overcome the inertia of the keys creates unwanted accents at the beginning of notes that you may not have with those instruments.
Mike Verta, who is a composer, does many tutorials on virtual instruments, and this two-part series is very informative:
Ahh interesting. Thank you for the insight and thanks for the tutorial!
Wow this may be basic info for MIDI composers but I'm already finding this video to be fundamentally informative. Thank you!
I highly recommend buying any of his videos, and be sure to check out his free stuff. This guy spends hours giving away free advice to composers - and it's good advice.
It looks like a great resource that I will definitely spend some time on :)