i see what you're saying. when i'm in a session, i usually switch gears during the session between tagg and lagg so it's harder for them to pick up reads. now it does seem that you are playing at a fairly loose table and i think a raise at about 8x would help limit the field. after all, you don't want to really have too many in the pot because there's a huge chance to get sucked out on my fish. but if i'm raising 8x with AA, I would also do that with everything else I'd raise UTG, which for me is very tight. but this all comes down to how aggressive you want to appear and how tight/loose you are/have been playing.