I am on Sportsbook.com and they've been solid for me, but I slowly wana work my way off that site. They were rated a D+ by sportsbook review and the saying goes, "If you get your bankroll to 20k, dont expect to get paid." They have been known to steal funds and if you claim large bonuses, there are a lot of technicalities with it, more than your average site. They are offerring a 50% bonus for foorball season if claimed by Sep 13th (I believe the code is EVERYBODYGETS) but I will not take it because I don't want them having an excuse to take the bankroll I've already built up. However I recently cashed out a grand off a deposit that I did not take a bonus and the check came in like 3 days.
The best sportsbooks are gonna have the most average bonuses. Bookmaker.com is an A+ on sportsbook review, will pay you with a smile up to the millions and has a 25% sign up bonus and a 20-25% reload bonus each week on like friday and tuesday or somn like that.
Check out sportsbookreview.com for solid outlooks on the sites.
Hope this helped, gl.