I've loved the KK Ultra in the past. I'm trying to save money to get one again. Right now I'm using a Happy mouth loose ring-not jointed-with a peanut roller, for both dressage and jumping, and he likes it just fine. :) (he has a really soft mouth, it's hard not to over-bit him.)
Can you explain why you think this myler bit might not be good anymore?
Bailey has been in training for about three weeks now and rides great with my trainer. Although I'm not as good as he is, with me she braces against me and doesn't respect my Myler bit. He uses a slow twist and she is perfect. I don't want to use that but I do think I need to change up from my current bit.