Yes I totally agree limping with any pp... literally. If you can get in cheap you get the majority of players to pay you off when overplaying their bigger pps when you hit your set. This does create an environment where set over set happens more frequently in my experience. But a major factor is playing out of position and that can make it hard to extract value from players who exerciser pot control because it more then often involves a check raise somewhere in your line and that sends up a big red flag. That's why I will also put an identical check raise in a small percentage of the time with combo draws I get when I limp with suited connectors. You get more folds then you would think and you can get an idea if they are just a "rocket" man that doesn't play anything but AA, most them come over the top, as we said they tend to. You can just pretty much fold whenever they re-raise you on the flop or turn if you make these plays and didn't flop a set and the money is not rite or take them to value town with your set. That is probably all I do on Zone beside jaming AA and try to get value out of KK, AK, QQ (which I try and not play as hard as some do) because AQ and worse just doesn't cut the mustard enough to play them in Zone. Just fold them they will get you in trouble when you have that awkward moment when you hit top pair on a Q high board get it all in and they roll over AA or KK, they tend to do that a lot.