UB vs. Cake vs. Absolute?

[tradenine]

I'm going to sign up with either UB, Absolute or Cake in the next week, and would appreciate any advice you could offer. Which site do you recommend, and how do they compare in terms of:

- bonus clearing

- multi-tabling

- cashouts/customer service

- rakeback generation

- quality/quantity of games/software (low limit NLHE cash)

- any other insights you have

Besides these three, are there any other sites I'm missing which I should consider (which offer rakeback)?