Grrr, can't find anyone who can make it into a midi

Anyhow, people have been telling me to replace the cello with a brass instrument in the baritone range (ex: euphonium, baritone, alto horn, alto trombone, Wagner tuba). Which do you recommend? The first two are more common (and they're the only ones Finale NotePad provides

), but I was told that the Wagner tuba has a nice sound quality, and the alto horn and alto trombone look appealing
