The advice here is always "play before you pay", and I agree.
The last time I remember my stereo shopping experience shopping as "Exciting", Steve Winwood, "When You See A Chance" was released. Every stereo shop played it non-stop, multiple visits; it was simply the best studio recording then, next to Fleetwood Mac "Rumors". It was ironic!, and ridiculous. Well, yea, you say, they wanted to demonstrate their hi-fidelity equipment.
Well, I learned to bring my own favorite recordings to the store, to hear more what I'm already familiar with. (Such as Your own mouthpiece to the music store?)
But, when I bring the stereo equipment home and wire it up, after a little while, I feel it just doesn't sound as great as it did in the store. (like you may feel about that trumpet you brought home last week).
My point is, you can't decide on a keeper after tooting through a half dozen trumpets at a music store in one afternoon. I like those 45 day return policies as well as that thread below or above about the decent return policy.
My first trumpet player was always buying used and selling used, later, he'd keep one for six months, then sell used.... it was comical, ya never know what he was going to show up with..... "can't lose!" he'd say. He settled ,finally on a Wild Thing, new. But he tried 'em all! And probably profited doing so. I'm sure.
My bottom line is you can't decide in the store; you must take it out in the "theatre" before you can be sure. So, watch and understand the return policy!