As a backup horn for the Prestige I have a Besson New standard 3 valve comp. of 73' that I use mainly for parades and marching services. It has a great sound, 1.5kg less weight and is suited to play 99.999% of the music I find myself playing with the wind bands I play. In the eventual very rare case in which there are parts that require notes below the F# I always have the French C Tuba at my disposal which can very well compensate for this eventuality.
2007 Besson Prestige 2052, 3D+ K&G mouthpiece; JP373 baritone, 4B modified K&G mouthpiece; Bach 42GO trombone, T4C K&G mouthpiece; 1973 Besson New Standard 3 compensated valves, 3D+ K&G modified mouthpiece; Wessex French C tuba, 3D+ K&G modified mouthpiece.