well, as for aggressive - i like mark of ninja so much cuz u can go all non-detection stealth, but u can also do it stealth kill stylez. so like, sneaking around and just taking out all the guards... u can string up the body of a guard to freak out the other ones.
as for deus ex human revolution...i onno - the weak plot kinda turned me off -especially cuz the set up was so interesting, the background details had a lot of potential for something unique, u know? the stealth in dues ex HR though...hmm - i onno, the controls just didn't work for me - the way u went to/moved out of cover, the weird break between the gameplay and the cutscene finishing moves, and just all the in-game text menus... just didn't work for me.
but then, so many people lurved it....i guess it's just a matter of preference, or what sorts of things u pay attention to/ are deal breakers.