Im doing well with
Betfred — Great retention and cross selling into casino from the poker side.
Poker.com — Most innovative poker site out there, adding new side games all the time and hard to beat 40% upfront
AP – Lots of reloads, and starting to sign some great pros (Most recently Grinder)
Hollywood poker – (pokerroom skin, does better than pokerroom for me oddly enough) bounty games with movie stars is a great promo 