Pinnacle have better lines for their matchups, but only offer a handful of matches, while the European sportsbooks have better odds for outrights, but they don't allow U.S. residents.
So, for their sheer range of golf matches (they offer 50 for the Reno-Tahoe Open; Piinnacle offer 8) as well their outright and prop (in the Majors) markets, Five Dimes is by far the best golf book.
They're also one of the sponsors here at MadJacks
