Secondary Site to PokerStars

My friend and I are looking to put big money together and play a lot of MTT between PokerStars and another site. What site would you guys suggest that has a lot of MTTs, a good layout, good blind structures?

FullTilt?
UB?
PartyPoker?
Paradise?
BoDog?
Other?

Any opinions would be greatly appreciated.

It would be mostly $20,$30,$50 MTTs. Maybe larger.