Gaming Heaven has tossed up a review of Neverwinter Nights 2, in which they give the RPG sequel an overall score of 84/100.
If you are willing to look past the issues mentioned in the review you will grow to love the game as much as I do. On the other hand, if you can't stand unpolished products you should veer away from NWN2 at least for the time being. In a few months the game will most likely be patched up and the issues will be gone, but right now that is not the case. And for the fans of the original: get this game, but expect a few unwelcome changes here and there.