equifit d-teq boots are my personal favs bc they are so many options. you can get weighted liners, sheepskin, the brand rlly caters to everything you could ever want in a boot! eskadron, veredus, & zandona also have some nice open front boots. i personally school in eskadrons and show in equifits.
I really like Beval! Classic leather that lasts forever
Equifit, Veredus, Zandonà, Kentucky, Equick, Lorenzini, Acavallo, ...
Escadron or horze or equifir