Well, I'm definitely going to be asking other knowledge horse persons as to their recommendations and was hoping to get some further advice to consider here as well.
Yes I know what I'm supposed to use my reins for and yes I know what I'm supposed to use my seat for - knowing and doing are separate issues at this point. My horse is VERY forward and sensitive, the very definition of a horse that would be suitable for a kimberwick. Prior to the kimberwick I was NEVER able to give any release nor improve myself as the focus was on speed control of horse.
My horse is slowly learning that I'm no longer a meek pushover but also that I'm becoming a better, more balanced and thoughtful rider (thank you kimberwick for allowing me to become that). But the eggbutt snaffle I'm using now still isn't enough as I tried it the other day (we went back to no release option). So maybe it's not time yet.
I was trying to be clear as to the need I have with the bit, ie. Brakes, so that I would get the most accurate suggestion. I thought brakes was a more descriptive word then leverage, but maybe not. But whether or not I need brakes, or whether or not I am a crappy rider isn't what I asked. I asked which dressage legal bit would be the best choice for a very forward moving horse (ie. Brakes).
One day I would love to ride like I should, but I'm not there yet, even if my 20yr horse is. She will teach me a lot, this I know.
So, please if you have bit to recommend, please do so.