wow, didn't see this thread take off.
I've been looking for a replacement game for counterstrike 1.6 for a while now, been considering CS:Source or Battlefield2.
I've been waiting for both these games to fall under the $20 region before I buy.
UT2004 caught my attention when I found out it was 10 bucks. It is definately different from what I'm used to, even different from what I remember in the original--it's a lot harder, I've been getting scores in the neighborhood of 7 to 31 or so for deathmatches.
That said, for 10 bucks, I just might pick it up for the mods alone, some of them look really cool.