I am a big Olds fan. I have currently 4 Olds trumpets, 2 Recordings (one LA and one Fullerton), 1 Super Recording and an Ambassador.
It may sound crazy to all here but my favorite of all these horns is my Ambassador. Tom Green supped it up by putting on custom finger rings and added a gold flaked finish on the horn body, leaving the brass slides intact. He also left the brass intact for the Ambassador engraving but gold flaked around it such that it looks very much like Harley Davidson badging. I do not know if it is the gold flaking or not, but when I got that horn back from Tom, it had a really rich dark sound, very close to my Martin Committee. It is the darkness in tonal quality of my Olds horns, that puts this horn as my favorite.
My Recordings are my second favorite, with a level of darkness I appreciate in a horn but not as dark as the Ambassador. While both Recordings to me sound the same, I usually choose the LA over the Fullerton as the rose flowered engraving is larger on the LA model and looks cooler when playing out.
The Super Recording is an amazing instrument in such a different way. It does play much brighter so works well as a lead horn. It also glides more easily into the upper range with much less resistance than both the Recordings. With that said, the Ambassador has nearly identical resistance in the high range as the Super Recording.