willow

Okay, here comes some info.

First things first, if you have a question about 'emails' or whatever for any particular company, phone them up and ask them. Each and every one of these companies treats certain clients differently from others and the dividing line usually has dollar signs written on it. If Penthouse ran 2 millions transactions through CCBill (I have no idea if they process with CCBill or anyone) then they're probably going to get rates and features designed for them that you won't.

Phone them up and ask. Please let us know what they all say.

CCBill - Solid as a rock, pretty much. One or two security problems, but who hasn't? Owned mostly by Cavecreek hosting so they have lots of money and contacts for new business, appear to have a solid merchant account (no rumblings), good technology which can obviously be adapted to new ideas and people who seem to know what they are talking about.
They participate here and show good communication skills with their clients. Kimmykin posts on this board from time to time.
People generally say they scrub hard, but a 2.5% max ratio is a tough target and what they let through is about right. You can get a decline or a chargeback, personally I'd rather have the decline.

IBill - Solid as a rock, during an earthquake. Have lots of investors with lots of money, not going anywhere soon. Ageing technology which they are attempting to replace which is causing some err.. ripples and gripes. They used to outsource their technology before aquiring the development company and it's fairly obvious that they don't like, or can't be, changing anything much until the new system is good to go. Communication is a bit dodgy, you wouldn't believe who you have to go to to get this much info.
Some rumours indicate that IBill are somewhat over the chargeback limit hence the database sweeps that are, in some cases, knocking out up to 30% of customers. No doubt a deal has been done with the powers that be and they're tightening the noose. People always love IBill for their approvals and conversions, maybe these days they're playing on a level field and this will come down a bit. Shared Global constantly boast about having IBill as a client at shows, make of that what you will.

Websitebilling - Little is known. Been around for as long as IBill but obviously without the investment. Pay on time, apart from some glitches early on. Cybererotica apparently use them, as do Candid for Voyeurdorm so I assume that given average traffic they convert okay. Currently in a lawsuit with Visa because they got fined a lot, (but who didn't). Seem to be constantly growing (had a bigger booth at Internext this year, more client service reps.). Technology is good and stable, no reported problems I can remember. Client reps. seem capable and friendly. Rick posts on this board from time to time. Anyone got any more?

2000charge - Even less known. I did get an email from someone there a while back with an MSBill sig. on it which makes me suspicious (anyone?). Very much into the Asia/European market from all accounts. I know nothing about their tech or relationships as I rarely encouter them