I'm not a fan of rubber bits - it's said that the metal causes salivation, so it's nice and wet in their mouths - rubber bits can be very dry.
I don't understand why people "over bit" their horses - it's got to be a fashion thing - like the fact it can be hard to buy a plain cavesson bridle - they've all got bloody flash attachments - or worse still, grackle nosebands. :(
Has anyone tried these neue schule [sic] bits?
I ride mostly in a snaffle - once in a while (frosty winter morning
) in a Pelham but I always use double reins and wouldn't let a novice ride her with roundings. I'm probably in the minority.