Hi everyone, I am interested in trying out a twin blade cartridge razor and I have my eye on a couple of Schick Slim Twin handles on that world famous auction site. I like the idea of either being able to have the cartridge pivot or not. I’m trying to determine what cartridges are compatible with the Slim Twin handle. Based on what I read and see it looks as if you can use an Atra cartridge (or one of the many Gillette or Personna equivalents) with it. Is this correct? I do see that you can use the Super II Ultrex cartridges with it. I don’t want to purchase a razor that would require me to hunt down cartridges. It seems like there are plenty of options...just want to confirm. Thanks for your help.