What side ist best for NL100 fullring?

[maddis]

I've read a lot of posts to figure out what side is best to make the maximum profit, but I still do not have got the answer. I play NL100 fullring games at the moment.

What I got is the following:
PartyPoker= Fishy Players, but no rakeback atm.
FullTilt= Offers 27% rakeback, but players are above average.
Pokerstars= No Rakeback, but FPP system. At Supernova this is better than rakeback (but I'm not Supernova. I would get it to "silver" for sure and perhaps to "gold", but that's all). Players are better than at PP.

Or is Betfair, Absolute Poker or Mansion Poker best? (they all have rakeback, but I don't know the game toughness)

Where should I play?
Where do you play, and for what reasons?