stats are just stats, tight, loose, aggro, passive, they all just give an indication of how someone has acted in hands you've played w/ them. so, the more hands, the better the read. also, take lots of notes on players, notes in comb. w/ hud stats can give you a pretty good feel for a player.

i just click on their name to see how often they're folding and on what streets. i use vpip in combination with pfr to decide how loose someone is and 3bet light accordingly.