To me, they're about the same. I ride my greenie in a bit similar to both. Its a double jointed bit like the second one. but in the middle there is a bean instead of the flat piece and it has a roller in the middle. He loves it and i've never seen a horse dislike it. The second bit, for some reason, none of my horses like. Never actually tried the first bit but my friend had one for her greenie and she really liked it. Both bits eliminate the "nutcracker action" that a normal snaffle creates, so I'd say just depends on what your horse prefers.