never had any problem with sportsbet , they are good and there payouts and grading are really fast the only negative thing is that most of times their odds suck
if you want my advice you should use bitcoinrush.io , the odds are better than any other bitcoin bookie since basically they are exactly the bitcoin version of pinnacle
the bad thing about them is that they don't have all the betting options like Both teams to score , HT results ... etc they have only money line , handica and over/under