I'm currently using vxsbill, they're pretty good at what they do, segregated merchant accounts, vbv and so on. They do have a lengthy signup process though for that reason.

Epoch has been in business many years, jettis a bit less long.

I chose for vxsbill for a number of reasons, one of them is I am based in the Netherlands so it was relatively easy to get my own merchant account (but it still took more time than I liked).

If you're on the other side of the atlantic then I'd look at epoch first, then jettis, ccbill or some other reputable company.

If you can get a merchant account of your own, this will greatly reduce your exposure to trouble, as well as a significant reduction in fees.