I like to keep my raises consistent also. If I'm playing a very tight table, I can raise 3 or 4x the BB and get a lot of folds, but on loose tables I really have to make larger preflop raises to get that guy to fold his T3 suited. From table to table I keep my preflop raises pretty much the same. Much harder to put a person on a hand when they raise a lot and its the same everytime.