As with EVERY instrument purchase, you owe it to yourself to try out as many as possible and choose the one that works for you.
Makes you should look at/play:
Yamaha
Stomvi
F Besson (if you can find one)
Kanstul
Getzen
Benge
Scherzer (if you can do rotary valves)
Schilke
B&S
Selmer
Blackburn (if money is not a problem)
I have played all of these at various times and have been seriously impressed by many of them (and seriously underwhelmed by a couple of the bigger names).
If purchasing new, I would suggest that the B&S is often to be found as the best "bang for the buck," if looking at the second hand market, you will definitely need to play them, but any of the above would be a good buy, if the price is right.
I play an F Besson and I have only played one make that I preferred - the Blackburn - simply astonishing, but that is just my opinion, I imagine we are very different in our playing. I have yet to find a group of trumpeters that agree on any aspect of playing
