UltimateBet deposit bonus

[Cheeseburglar]

I'm ready to open a new UltimateBet account tonight, but I'm wondering if any of you have a deposit bonus code or such that's better than the 100% up to $500 offered by them right now?

Also, are there any rakeback programs that work with the 100%/$500 bonus? From what I could see I could get only a 40%/$200 bonus through one particular rakeback site, but the others didn't seem to mention anything about this...