Lifestyles Snugger Fit. They do NOT slip off. I tried the Iron Grip but couldn't feel much through them and they are little more snug to the point they're uncomfortable for me. I'd like to try the Beyond 7 and I'll get a sample of those the next time I order condoms.
I've had Lifestyles break on me not once, but twice. Both times, I couldn't feel anything, and then after a little while sex started feeling great, like usual. And then I pull out and there's just a ring around the base of my cock and no condom. No wonder it felt so good. :tongue: After that, I decided not to use them anymore. Glad they're working for you, though. :smile:
Recently I tried the Trojan Magnum Thin and they're pretty decent. Overly tight at the bottom like Magnums always are, but hey--I've never had one break or slip or anything. My major complaint about them in general is the smell--far too rubbery.
With an ex who was allergic to latex, we used Avanti. A bit on the snug side, but for non-latex, they were the best I could find at the time.