well, sometimes Pinnacle doesnt have the best line on sides and totals for the 'right' sides. I dont even look at favorites over -140 though, so I'm not taking that into account. Last year, I had a very, very successful season using: (in order of number of bets placed)
Pinnacle: must have imo, their runlines and more often their alternate runlines on dogs I love
OLY: mainly for totals and rl's and alt rl's
cascade: must have #2, sharp totals
5dimes: combination of above two, and the quirky prop, but their software has caused blindness in one eye
canbet: their vig isn't real competitive but they are often slow to move, and at times you can find lines 10 cents off in the wrong direction after the public comes to market when the others move the other way
Hollywood, CRIS, Grande, Royal: I used them, not as much, looking into BetJamacia as well. I may play more overnights this year, CRIS is good to have for that.
flavor of the week books: I cautiously use books that I notice are slow to move, or just dont seem to understand what is going on.