No problems so far. Works great.
As for books...
Carib, 5 Dimes, WWTS, CRIS, Horizon 20 (eHorse, Las Palmas), VO Group (Players Superbook and its siblings), TCBets, BetBet/CasinoBookie, Platinum Sports International, Sportbet group... Those are the main ones I can think of.
FatFrank posted a list a while back. You may want to do a search.