Maxcash is still huge, convert great and have killer sites. Take a look at all the big boys exit consoles and you'll notice everyone is still pushing them heavily. They haven't gone anywhere and are just as strong as ever. And in the 5 years I've pushed them I've never had any payment problems (only during the FTC ordeal which has been cleared up for years nows). They have always been rock solid for me.
It all does depends on your traffic though. Everyone that I know with quality (non tgp) traffic has always converted MC well. I don't know about TGP traffic though.......
Ultimately all you can do is give them a test and see what happens.
Oh and Headless is actually a cool guy. This is GFY after all so he just comes here to mess around. If you go listen to his radio show you'll notice he's actually full of kiler info and is always ready to help people out.
Just my 2
