Soft competition: Stars vs. FTP vs. Absolute?

[Svarog]

US Player -- I play on Stars and I'm thinking about switching to a site with rakeback, and have ruled out the following:
-Bodog (already have account)
-Ultimate Bet (don't like interface)
-WSEX (won't accept my credit card / not enough players)

So it looks like either FTP or Absolute. Any recommendations? At the low buyin levels ($10-50), how does the "soft competition" factor at these sites compare with Stars?