It depends on if I have enough to scare the other players out. If they have huge stacks and an all in bet won't get them out on something marginal, Ill wait for a big hand as long as I can. But If I ahve enough to where i can steal the blinds and a called bet, Ill usually go in with just an ace/rag or a small pair. Obviously it also depends on If the pot has been raised before it gets to me though.