NEVER had a problem with them. Like Saint said, the 8.9% can be high, but it takes literally seconds to move from your bank to Neteller to the sportsbook. With Pinnacle, it is a $15 fee ($20 at Carib) and you get 1 free withdrawal per month ($500 and up) which is good.
Highly sugest (like Saint said) is open a seperate account (for gambling only) and that way, none of your bank account info is accessable. I have 2 (Linked up with BOA) and when the funds come in, I transfer 99.9% into my real checking account and leave a few dollars in the gambling account.
Hope this helps!