I've been reading about ACE 2, sounds awesome, not fully converted just yet but glad they finally fixed so many of the bad stuff in ArmA 2. Maybe I should have read up on the 1st ACE a bit more as I dare say its very similar in a lot of ways. An example of handy info I read toady is
"Different classes have different stamina levels: Engineers, as well as Special Forces units, have increased stamina, while medics, crew members etc have lower than a normal grunt."
Very interesting