For those who've played both games, which one do you like the most?

To be honest, I enjoy the first one better since I was blown away by the cover system, an intriguing single-player and an addictive multiplayer. I guess I would have a different opinion if I played the second one before, but overall, the first one is a very good game and I can't wait to see what they'll do with the next rainbow six game...

For some reason the second one ended up boring me before I could even  make it halfway through the game. They didn't add anything new to the second one, the graphics were the same, the multiplayer was lacking some of the best maps. They're practically the same game. Therefore I choose both with a resounding meh.

I played both but only for multiplayer so not much i can say since 2 just made some slight improvements to the first game.  Some people might like the first for having better maps, the ones they know, but I  liked the 2nd just as much.

I really enjoyed both, if the first one had the A.C.E.S system and ability to do the story mode with cutscenes and your custom character it would have been amazing.
 
I'll have to go with the first one because I played that with my friends/clan for months while everyone seemed to give up after a month with R6V2. We would have full games of what was it 8 on 8 clan only matches. Also The fact that my clan was so good that we were accused of cheating on attack and defend in calipso casino was one of the best moments in my video game history, and playing terrorist hunts all night long just to rank up were some fun times, i mean i never even made it to elite. damn now i want to go play some vegas 2 now. i think im gunna. Plus Vegas 2 was more of an expansion pack.

I think they are both really good games... I'm in the middle of playing through the first one again, then going to jump back into the second one. Will be happy when/if another comes along.