To each his own, but the general reviews/ratings are on my side with respect to both NWN1 and NW2 comparatively.
Interesting seeing as how most reviews I've read (and most fan opinions I've seen) have shown a preference for the NWN 2 OC. If you're talking about the game in general than yes (although from what I hear NWN 2 uses a better rule set) some do prefer NWN 1, but as far as campaigns ago NWN 2 has more support from both critics and players.
I'm not too concerned about New Vegas.