At $10NL my preflop bet was 4bb whatever the cards or position, but in $25NL I've just started betting only 3bb from early position. I do this even with AA. I'm pretty sure this is +EV, at least for me.

It serves 2 purposes. It keeps the pot small, which is fantastic when you're out of position with TPTK or an overpair, and if you raise AK, there are a few callers, and you miss the flop, you have wasted 1bb less.

To put it simply, any hand is worth less in early position, so I give it a smaller bet preflop.

I don't see much difference in the number of callers. If someone is going to call 75c they'll probably call $1. I haven't noticed a difference at my tables anyway.

Any comments on this?