Ramdizzel
Choosing a book takes some consideration, things like the type of bettor you are - small - medium - heavy, bonuses vs. reduced juice, parlay payouts, with baseball dime line or no dime line etc. are all factors.
Right now all of The Rx. sponsers are doing their best to pay players as fast as possible. Personally I would go with one of the older established books like
Bodog but would inquire beforehand about withdrawal times and methods available to your geographical location.
Best of Luck, wilheim