I was using CCBill as my primary but they shut down my site on a Labor day Friday night with no recourse to fix the problem until the following Tuesday. (CSs)
Also Verotel allows for certain fantasy art and comixxx which CCBill did not allow due to VISA standards, although it was not present on their SOP.
Verotel provides good support in the form of live chat 18/7.
Other than that they convert well and I have a high recurring rate of over 45% with them since last September.
I use the wire transferr which should come every Monday, It always hits my bank on the previous Friday, cool (no fee).
Hope they stay in business for twenty years.
Probilling and 2000Charge are second and third on my sign-up area. Probilling for checks and 2000Charge for Euro 900 and ATM billing.