As for NWN2, people said it wasn't as good right? Why not?
It's alright. It starts off ok, but it gets bogged down in mindless hack and slash through hordes of opponents after 10-15 hours and begins to get very boring and repetitive. The graphics aren't special either.
The Witcher and Mass Effect are the only two great RPG's I've played recently, although both are absolutely brilliant. However, the Witcher is still new so it won't be cheap yet, and Mass Effect is XBox360 only, AFAIK.