Hey sorry for the late reply. The biggest differences I guess are around peoples preflop ranges. In the small buy ins you will see a lot of players limping in early on with trash and thus they end up with a lot of weak top pair type hands. So the best way in the lower buy ins is to play quite tight early on and really hammer all the weak players for value and avoid doing much bluffing. Later on in the smaller buy ins you really need to categorize the players into people you can push around and people you cant. A lot of players seem to tighten up the deeper you get so you need to exploit that by pushing them around as much as possible.