One of the worst things someone can do while trying a new horn, in my opinion, is play the horn like the trumpet they currently own! Its why a lot of people I know who play Bachs or other "mainstream" horns thumb their noses at every other axe!
Hell, if you play an India Bessons your entire career, I'm sure you will look down on other horns if you just play them expecting a feel and tone similar to your India horn (God have mercy on your lost soul). "They don't feel as good as the horn I own already." I guarantee every one of your guys out there have heard that.
I also guarantee if you play any other horn exactly like the other horn, you will not be happy with the results. After playing a Phaeton on Blackburn leadpipe, my Bach seems slippery. After playing a horn with a rounded slide, the square slide seems stuffy. After playing a square slide, a round slide seems too open, and you overblow. After playing a heavyweight horn, a lightweight seems too flitty, with a sound not centered. After playing a lightweight a hevay horn seems ponderous, like moving an elephant.
You wouldn't drive a van like a sports car, nor would you drive an 18-wheeler like a go-cart. They're BUILT differently, and are expected to be HANDLED differently.
A Bach will not play like a Getzen. A Blackburn will not play like an Eclipse. If they were supposed to all be the same, why the hell would you spend more than 400 dollars on an instrument?
Rant over.
Van