There's a very through review of W2 at GamesBanshee:

http://www.gamebanshee.com/reviews/103535-the-witcher-2-assassins-of-kings.html

I don't agree with all of his criticisms-most of which have already been discussed in this forum, but its a more in-depth review than most and worth reading.

And TW2 is getting favorable buzz over at http://www.rpgcodex.net/ They're notoriously tough on games there.