I use
www.sportingbetusa.com Never had any problems cashing in or out. If you want to make multiple bets they do have some specials- ie. a 15% buy in bonus, 2 free bets a month, 5% juice fridays, and 5% reload on thursdays.
(ohh, they also have a refer a friend bonus so if you would be so kind as to Pm me before you sign up, should you choose to do so... [img]/images/graemlins/grin.gif[/img])