Tribeca bonus is working out to $16 / hr for me playing 3 tables of $1/$2 6 max.

I think Prima is one of the toughest sites around, but if you can beat it then the Codepoker Gold bonus of 50% of Profit (covering your back with 30% RB of course in case that turns out better) must be hard to beat.

Personally I would stick with B2B if you can't comfortably beat Prima- smaller site just mean you get better notes faster and up to 60%RB in a very good month with sign up bonuses as alternatives if better - and playing 6 max NL there is plenty of action

Tain is also a nice possibility - see BW for deatils.

I think Tribeca is by far the best at the moment though - I have $750 at 80%RB equivalent to clear there at the moment (reload at VC and sign up at BetUS)- have you really no way of funding there?

Yes - RB is 'unmentionable' to stop folks spamming in the forum and as the site itself offers RB deals for some sites.

But you can't really discuss ring game sites without mentioning it if it's relevant - all bonuses/points/affiliate or site led RB come down to RB equivalence comparisions eventually.

B2B offer actual direct to player RB of up to 60% if you accumulate enough VIP's
The Tribeca sign up and reload bonuses are usually at 80%RB equivalence when they are around and if none are available you can still get Tribeca RB thru BTP I think (Doyle's).
UB offer very slow to release bonuses, but also a matching points scheme and RB of about 30% thru various affiliates etc..
Stars offer irregular bonuses to regular players that release very slowly but also a quite nice FPP and VIP freeroll point system that is worth up to 27% RB at highest levels.
You have to sit down and do the comparisons for each site you are thinking of playing - and also factor in just how hard it is for your particular style of play..