These are all such good questions and answers. I really love trying out the different breeds of horses as well. I wish we could own more. I love them all but for sure have my favourites.
I really enjoy my Belgian draft mare. She is by far the most steadfast for free roam and what she lacks in speed she certainly makes up for in courage and sheer bulk. I have had griefers slam full on into her and they go down like the titanic where she just grunts and stumbles a bit. I love that.
I also have really enjoyed the Hungarian Halfbred. This mare is great for traveling across the map and back again. Just a steady animal even in really obnoxious shoot out ambush scenarios. Doesn't always WHOA immediately so watch out for the trees and cliff edges.
I also really like the American Standardbred - really nice horse for missions where you need to get there and back quick. Can out run the wolves, gives me plenty of snorts and whinny warnings for ambush gangs, cougars and bears. Not so great in the swamp though. I have been dumped amongst some alligators but that was my fault for not looking where we were going. I am trying to level up so I can get the silver tail buckskin with pretty blue eyes and stockings.
I am currently riding a Thoroughbred and I just reached 4 bonding with her. She is turning out to be wonderful. The only thing I probably wont do is take her back up into the snow as she seems to struggle a bit.
I also have to say that the Andalusion really surprised me. I decided to try one out when they started offering a free perlino and at first I wasn't so sure but after you get to max bond and ride them for awhile, they are quite nice actually. Very versatile.
The Mustang and Nokota were tough little mounts in the story mode. I really like them in the desert. They can run pretty fast and dont seem to mind the rough terrain.
Again, I wish we could own more. Maybe the summer update will offer a way to own more or break / train some wild ones. This might sound quite silly but sometimes I just like to have my character go for a nice long ride around the entire map and just take in all the scenary. Stop and fish, take some pictures etc. Helps clear the mind and soul after frantically trying to get XP to level up. It would be nicer if you could set up camp where you are as I have found some beautiful tranquil spots that I just wanted to spend more time in with my horse.