I've been using a Vosal I bought from SPortack for a year now. I thought
my guy was kind a HOT but he may just respond to me pretty good as
well.
I thought the Vosal was pretty adjustable in severeity, but a few people
have told me it's fairly mild compared to those you just mentioned. I
ride him with control in his and would never put a bit in his mouth
again, but I tried it on a new 4 yo we just got and he was pulling hard
on me the whole ride. I may not have had it adjusted properly for
either. I'll try it again soon with a smaller adjustment on the chin
piece which should give me more whoa.
Susan & Sabian