It's a sin to use 20cent line books such as TheGreek, Bookmaker during Hockey season. 5Dimes' Reduced Juice is Amazing!
European bettors are lucky since they can enjoy BF&Pinny but I'm afraid 5Dimes is the only option (*) for US Bettors. There isn't any other A/A+ books I know offering 10cent lines for hockey and open to US Bettors as I know? But not sure. Correct me please if I'm wrong. (Heritage maybe? How are lines in heritage?)
Bettors from EU can enjoy BetFair, Pinnacle, 5Dimes, Sbobet.
*The only disadvantage about 5Dimes Reduced Juice is, there's 250$ limit.