888 is the worst, you can pay them thousands in rake and they will come back to you with wheel spins which awards a 12cent free roll ticket 98% of the time.
You can get multiple 'wheel spins' on Betsson right now too. All you need to do is play 50
hands that day. You also can get 2 additional wheel spins if you play 200 hands, then 500. The wheel spins also probably pay out more than 888's do.
Plus they charge less rake, and you can get up to 30% rake-back on all bets relatively easily. Even if you only get the base rake-back, it's still 10%, which is way better than 888's, 'wheel spins'.
Don't let these guys take advantage of you. There are way better sites out their that will give you back infinitely better rewards while charging you less rake.