i'm surprised i never hear anyone mention Canbet! they're my 2nd favorite book (after PINNACLE of course)
they've got -107 on everything, excellent customer service, honesty, what more do you need! sure they don't have any worthwhile bonuses, but what most people don't understand is that if you have a decent amount of plays each year (at least a few hundred), you're going to make MORE (or lose less) money with a low vig book with no bonuses, rather than a book with standard vig and big bonuses!
i'd go with canbet.