Why in the world -- for general purposes -- would you choose an oval euphonium? If you want to play in a "German band", then that would be a different issue. Have you ever played an oval horn in an ensemble? Ever sat beside someone who has? Ever sat to his/her left? Do you have any idea how you would be welcomed into an ensemble with such an instrument?
Just some things to think about. That low price and your commitment to rotary valves would buy you a lot less horn, and a lot less versatility than a standard large bore euph. I should hope you'd be able to get one (similar to the Schiller or Mack Brass) in Japan for the same price as the Wessex "Kaiser". But if you have to have the rotary valves and can't afford a real Kaiser baryton, then your choices are constrained.
And if you try to play the horn with a honking big bass trombone mouthpiece (especially the Yeo), I doubt that anyone -- including you -- will be happy with the result. Been there (on both oval and standard euphs). Not pretty.
Last edited by ghmerrill; 03-10-2018 at 09:17 PM.
Gary Merrill
Wessex EEb Bass tuba (DW 3XL or 2XL)
Mack Brass Compensating Euph (DE N106, Euph J, J9 euph)
Amati Oval Euph (DE 104, Euph J, J6 euph)
1924 Buescher 3-valve Eb tuba (with std US receiver), Kelly 25
Schiller American Heritage 7B clone bass trombone (DE LB K/K10/112/14 Lexan, Brass Ark MV50R)
1947 Olds "Standard" trombone (Olds #3)