Hi guys! I thought some of you might like an update on my purchase of the Myler low-port comfort snaffle. It was a Christmas gift from my folks, so I've only had a chance to ride in it three times. Here goes:
Ride #1- my 17 yr. Old Mustang gelding, who is a trail horse supreme.

I did some walk/trot/canter. Actually a fair bit of cantering. He did fine it in it, but I felt like I had spongy brakes and minimal steering. The brakes didn't surprise me, because I've ridden him in snaffles before and I know he isn't super soft to them. The steering surprised me a bit, but in a way that was good, because it reminded me to use my legs more.

Overall- I can ride him in this bit, and he does fine, but I don't think it's an optimal bit for him. I find he rides best in an argentine type snaffle. I will probably use it on him once in a while for fun, but it will not be his main bit.
Rides #3 & 4- my 16 yr old Missouri Fox Trotter mare. Good trail horse, but very forward at times and somewhat barn sour. In other words, if the mood strikes her right, you have to do circles and ride with contact all the way home (I normally ride on a loose rein at the walk).
She did AWESOME in this bit! For a horse with a lot of "go," she has a very soft mouth, and she did super in this bit. No fighting or fussing or gaping. She really seemed to like it. I was happily surprised that this may be the bit I ride her with most often! She was very controllable but also seemed very content with this bit. So I give it 5 stars for Isabelle. (the bits I normally ride her in are either a full cheek snaffle or a low-port, low-leverage curb)
Overall, I am super happy with the Myler low-port comfort snaffle. Mustang did "okay" and Fox Trotter did "excellent."