From what I have seen at higher limits, *usually* people tend to only raise really premium hands OOP so if someone UTG(+1) comes out firing, they usually have some ammo. The tables I've been playing I have been folding mid-pairs in EP & MP because I had been limping mid pairs into raises from LP+ and higher PP's HU or 3 handed and it wasn't good. In MP & LP in un-opened pots I stuck to limping mid pairs 66-99, ATs and AJ(s), raising TT+, big slick & chick (suited or non), occasionally KQs. Facing a raise or re-raise on the CO or Button I was only calling JJ+ or AK. I havent seen AA, KK, or QQ in almost 2K hands though so my play at higher limits with uber premium hands is limited.. JJ has been a MONSTER for me lately though! I occasionally limp TJ, QJ, and KJ or suited connectors 67+ from the blinds depending on the table..

I played about 500 hands of $1/$2 the other night and was low 20's VPIP, WSD was low, W$SD was high and I doubled up 4 different tables (20BB buy-in), leaving as soon as I hit 40-50BB, almost doubled another, and lost half a buyin on another sticking pretty tight to playing those hands in those positions. Most of the tables at $1/$2 were +/- 45-50%VPIP so I was usually one of the tighter(est) people at the table. I didn't see many flops of 4-5 or 6 at all, mostly HU, 3 or 4..

FWIW, 75ish % of my recent run has been won on the button. Don't know if it's pure coincidence or what, but looking overall at my PT #'s, UTG and EP were kicking my ass even not limping with decent hands, so I I've been almost air-tight there as of late..