Picking a full cheek snaffle

I am admittedly way over my head here picking out a bit! I have a bridle/bit to use with Blaze, but it's a Western bit and they suggested riding him in a full cheek snaffle. I know a small amount about bits and am definitely familiar with all the different types of snaffles. However, there are so many full cheek snaffle options! Where in the heck does one begin?? How do I determine what size he needs? (I know how to tell if a bit is fitting properly in the corners of the mouth).

Some I've found:

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

Big Dee's Tack & Vet Supplies | Product Information

THANKS!

Missy, the only one I would use is the third one - smooth mouth and joined in the middle with nothing else. The ones with the slow twist or the wire mouth are very severe. The rubber or plastic mouths are really unnecessary which leaves #3.

The average mouth size for horses is 5". If your current bit fits him (not that you have to use it but just try it for fit) then measure the span and use that measurement.

I can always count on you for the good answers The bit I have now does fit him; I looked when I "test rode" him. I don't want to ride him in the old bit anymore; he didn't seem to like it at all.

Gotcha, no twisting or wire, no plastic or rubber.

I agree with iridehorses...no need for twisted wire or rubber covering. Of the ones you listed, I agree with #3, the plain ol' snaffle!

One more to research that I really love is the french link. It's very mild, just like your standard snaffle, but it has 2 joints with a "dog bone" in the center. When you have contact with both reins, the bit doesn't collapse in the center and jab your horse in the roof of the mouth. Beware of the Dr Bristols though...they look kind of like a french link but are way more severe and many horses balk to them. The center piece in a Dr Bristol lies at an angle so the edge has contact with your horse's tongue. Whereas the french link lies flat on the tongue. The center piece is not a curved dog bone shape, it is a flat oval with straight sides (the first one you linked to).

Another similar bit to the french link is the oval mouth...same thing, just a "bean" in the center instead of a "dog bone."

French Link & Oval Mouth:

Those too are good bits, Equina. My favorite would have a Billy Allen mouth (that pertains to the style of the mouth piece. It has a barrel in the center that prevents the nutcracker effect and allows each side to swivel independently of the other):

Thanks you two! He seems to have a soft/responsive mouth, so I'd rather start out with a mild bit (i.e french link) and then change later if necessary.