Hello again Lis, I had my boy in a waterford 3 ring for xc, hunting etc. My instructor recommended the korsteel JP loose ring snaffle for schooling. I have found that he goes really well in it, the bonus being that I can also jump him in it and am considering trying it hunting.
It is not a strong bit but he seems to really respect it, well worth a try as it is only 8 quid. Considering I was thinking of spending 60 odd quid on a neue shule and now don't need to, it's a bargain!