I play the 33s on Party (limit only) and the 55s if a game ever goes (rarely).

It will be difficult to compare SNGs on Stars to those on Party. My understanding is that Stars starts you with 1000 chips; while Party starts you with 800. Because of the relatively low number of chips on Party, the strategy is, in my opinion, not to play many hands in the early rounds at all. I fold pre-flop most of the hands at 10/15 and 15/30, playing only premier starting hands. I don't know what my VPIP is, but I'd imagine it's very, very low. Even if you play a good % of the hands in later rounds, and even if you pfr a good % of those hands, I'm not sure how much the stats would reflect this, given the number of early hands you don't play.

So I guess what I'm saying is that I think the Pokertracker stats are meaningless for good players in O/8 SNGs on Party. What they do is help me identify the players that don't know what they're doing.