I bought Just Cause 2 for $8 on Steam when it was on sale!
Haven't played AVP though. Watched it played however, and...well...it looks like any other first person shooter, just with...well...aliens. I guess.
JUST REMEMBER. If you do decide on Just Cause 2, visit here at some point.
Just Cause 2 Mods.com [http://www.justcause2mods.com/]
Just Cause 2 is like...Saints Row 2 met GTA4, got knocked up, aaaand...oh dear, this analogy is going no where. Uhh, alright: Just Cause 2 is like Saints Row 2 meets GTA4, and is not as fun as the former, and is significantly more entertaining than the latter! There, how's that.