With everyone in my database I have over 500k hands recorded. Here are the stats that I found to be the most profitable:

VPIP 10-15%
PF raise: 7%
Aggression factor: 6+

Everyone check out your stats and see how you compare. I'm not making any claims to this being "perfect", but I think anyone putting up these kind of numbers is going to be pretty solid. I found these stats to produce an average win rate of 6.07/100bb, which is kicking ass. This type of game maybe too tight for some. Again these stats pertain to NL25 and NL50, it might not be optimal for higher stakes. I am going to do more research based on position and WSD%.