Hi Chris
Well I can tell you the the butterfly script has a huge problem with authrize.net. A few hours before my launch Becky was testing everything one last time and we found out that it would accept any card number as a paid order even if the card was declined.
I'm sure this can be fixed but not a few hours before launch. But the butterfly script works great with everything else.
As most people know I'm a huge fan of the butterfly script, yes it has some bugs but what program is really bug free.
Plus it will do everything in list A and then some.
Things about your C list
LaunchFormulaMarketing - Robert Puddy has a great progam that works great. I know Mark Widawer very well and he loves it. That goes a long way in my book. But I have never used it so I can't say to much about it. I don't think it really ever caught on.
ButterflyMarketing - I use it and I know a lot of other people who do. The soical proff from the people who do use it is huge. Has a great members area that is 2nd to none. Plus it has been proven to work and you can get lots of custom work done for it.
Plus it will make members into affiliates which is HUGE.
JV Manager 2 (Fantastos) - Never used it but I know people how have and it seems to work fine.
Powerpay.biz - These guys are great to work with and this is how I got my Authorize.net account.
Amember - Works great, but you have to pay for every install and a upkeep fee. I have 1 seat of Amember and it works fine. I don't really like it very much but that is just me.
Membergate - Never used it but I know it works great from what friends have told me and the support is great.
BUT THERE IS A NEW KID ON THE BLOCK
http://www.extrememember.com/
I know the guy who created this very well and I have seen the back end of how this works and I can tell you it is everything most people could ever want in a membership software.
It really address the short falls of the above software and takes membership software to the next level.
PM me and I will put you in touch with Shane so you can see for your self.
Thanks
Charles Kirkland