I love the holy trainer so far. Takes a bit of trial and error getting the right ring but other than that I love the feel.
For me it’s the original cb2000, it just fits my penis perfectly, I have tried the 3000, 6000, 6000s and the curve, and I’m just to wide for all except the curve, that’s far to long! I can squeeze in to the others, but my dock goes cold and blue minutes.