I prefer the fast payout site like Nitrogen, has no trouble to wait for 10 minutes withdrawal, much better than 2-24 hour withdrawal here.
It all depends upon your individual preference and even i do prefer gambling sites which has instant withdrawals rather than waiting it out because in the bitcoin world delay mean you can lose your money and so for sports i use directbet which i think is the best book without any fuss as you get your coins back once the match is over.