CCBill basically only does membership type websites for adult merchants. 2O will not support adult merchants so it is a bit difficult to compare the two
Great service, good reputation. If you are in the high risk industry, I'd give them two thumbs up. They are a bit pricey on the surface but worth every penny in the long run.
they are one of the top processors for adult webmasters but for general web work it wouldn't be helpful unless you're running a subscription based site. they don't offer a catalog type purchase processing system payment service. wish they did
I have met a number of them - from Ron Caldwell down. They are are very nice (and throw fabulous parties ). If you are interested in meeting more in that industry, you might check out adultwhoswho.com