In terms of Sly 2, how would it rate compared to Jak 3 and R&C3? I'm not a huge platformer fan, but if it's really great then I'd probably pick it up anyway.
I haven't played every single game of every single series, but I enjoyed the Slys most of the platformers I played this gen on any platform. Cool, stylish, with a plethora of moves, and a variety of ways to play. Plus, plenty of leftover things to collect, boards to "perfect,"
and whatever else you may want to do after finishing the main game.
My local EB games has a copy of ICO used, but there are only like 8 copies in the entire city and all of them used. Needless to say I'm picking up the game tomorrow.