I place a lot of value in horns that already have the right notes trained and available for recall. Life is a bitch when you buy a new horn and it can't do anything by itself! Artisans these days don't have as powerful magic wands as they did 75 years ago.......... The problem with many working musicians horns is that they are shot, worn out, dead. Some of this is due to lack of proper care and a lot of miles, some of it is due to excessive use without good valve oil. Nope, the library of prepared tunes is the only thing that a celebrity trumpet will get you.