It sounds like most of you are talking about defending blinds, and I wanted to say something about the implied odds. I don't think implied odds are much worse at mid-stakes. If the villian has an overpair (AA/KK/QQ especially), raised from a steal position, and you flop a set, I think you will make a lot of money. The problem is, most of the time, the villain won't have a big pair. So if you flop a set, you might not be paid off because villain doesn't have a big pair, or you don't flop a set, and the villain may not have a pair, but this is a tough decision to be in.

I guess what I'm saying, is the implied odds to hit a set are still usually there if you can put villain on a big pair, and then you shouldn't raise preflop. Try and hit the set and get paid off. But if villain is likely stealing, reraise preflop so you won't be in such a tough position after the flop, and to stop him from stealing.