Although most hornists may consider a single B flat an option exclusive to beginning horn students, there's something about playing on a very lightweight instrument that makes playing the lighter fare (Mozart, Haydn, chamber music) all that much easier. This brand new Briz single B flat with stopping valve would be a great option for a hornist at either end of the ability spectrum.
The Briz brand has made a big splash in the horn market due to their exceptional quality while being able to keep the price down. For most people that come into the shop to try out single horns, the Briz takes the cake regarding ease and sound quality. But you don't have to take my word for it; take it out for a test drive!