for ut you gots Infiltration, Strikeforce, and TACOPS.
Inf & Tacops are going commercial (i think actually the infiltration guys just got hired to make a new game). INF is much like rainbow six, perhaps even more real. Its pretty cool, and I like it the most. I havent played much of tac ops but its like CS but perhaps a little more action-based. I dont really like it, but its probably the most popular mod for UT. Then you have strikeforce which was hyped up to be so awesome and I think it really sucks. They just released a new version so perhaps now its better, but it seemed awfully boloated (sp?), with like 100+ mb installer and two 100+ mb map packs and not great gameplay. In my opinion INF = 1, Tacops = 2, SF = distant 3. Inf has iron sights on the guns too, supercool!
This comment was edited on Mar 16, 01:26.