I think, as you can see in the responses you’ve gotten here, it really comes down to the shape of your horse’s foot and what you’re comfortable handling. Does your farrier/trimmer carry fitting kits on his or her truck? Mine did, which is how I got to try a few brands on after a fresh trim to decide.
For me, Scoots do the job really well. A pair lasts us ~800-900 miles on gravel roads. With Scoots, you really want to make sure you don’t have issues with underrun heels/long toes, or they’re not going to work for you. I like how easy they are to get on, and I rarely have issues with losing them, even on muddy trails. My mare does sit right on the border of two different sizes depending on where she is in her trim cycle, so I do own two different sizes for her fronts. The only time I’ve lost a boot is when I’ve used the larger size too close to a fresh trim.
If Scoots are of interest, I’d highly recommend working with Stacy Pratt of Heartland Scoot Boots. She has a very active FB page and will send you trial boots after a virtual fitting via pictures of a freshly trimmed foot. Very easy to work with. I’ve heard not-great stories of people trying to take their own measurements and size via the official Scoot Boot page, so I would personally not go that route.