I grew up on a Conn Lady euphonium which was school owned. Can't remember if it was 3 valve or 4. Senior year after deciding to pursue a music education major, my parents bought me a 24I Conn which in those days was big money. I also had tried a 3 valve Conn bell front which really had a bigger sound than the 24I. Still have the Conn today and still use it. The bell needs some restoration as being removable seemed to take the most damage. The rest of the horn is in excellent shape. It went for many many years without being touched by a repairman. Finally had to replace all the corks and felts and had some minor dents removed. What a great horn.
B&S 3046 Baritone/Euphonium
Wessex Festivo
B&S PT37-S
Schilke ST20 Tenor Trombone
Jupiter XO Double valve bass trombone