I would say a Selmer. Yamahas have not been good to me, but my trusty old Selmer is like a tank in the way of marching season. Dirt, grime, the works, and its an easy clean and fix. Yamahas are ok for concert season, but with shifted fingers I find them hard to play on for marching. Also, your mouthpiece is very important to the sound of the rest of your instrument. The worst instrument will sound tons better with a good motuhpiece. I have a Selmer C* and its fantastic. They're running at $150 to $160 depending on where you buy it from.