I play trombone(s) and Besson Euphonium with local community bands. I am looking for a way to develop embouchure for low notes and wondered if playing a tuba might help. My instructor said it might. I wondered what brand might be best. I am not looking for top of the line and maybe I can go for used if the horn is not in bad shape. I would like a 4-valve compensating if possible. Any suggestions if it would even help and if so, what might be a horn to look at. I can see spending a few thousands (whatever that means)!