DRG and BL are solid or even very good games, but I like neither games, and yes I played both of them a lot (in "coop") and all BLs except for the new Tina stand alone thing. Trepang2 has a demo, I played half(?) the demo I think/guess (on very hard, muh skill) and liked it bar a few smaller issues.
Unreal Tournament 2004 is awesome, Stalker is very good (I did not like the story of the first game, guess I don't like the story of the series in general, the books seem much more promising). Well, I enjoyed Shadow Warrior 2 a lot but it also has melee combat and a bunch of skills and can be played very zoom zoom and the itemization (or at least attribute tokens which go into weapons) is, uhhhh, interesting at best, but the amount of available weapons and modifications to change behaviour are top notch.