Sorry, but I have to disagree. I accept B-flat horns completely, however I don't see how you can say that the quality of sound has improved. I prefer G horns because of the tone they produce. Although it does matter how you play the horn, B-flat horns tend to have a brighter, brassier qulaity, whereas the G horns tend to be more mellow sounding. That's a personal preference in what you like to hear. But are you implying that hornlines have more quality because they are using B-flat horns? I should say not. If they have more quality, it's because they have decided to work at sounding better, not because they got a new horn slapped in front of them.
Sorry Glen I have to disagree, the G horns provide a "brighter ,crisper " tone ,where as the Bb
has a mellower warmer tone , the G horn sound travels farther and has been a staple in drum corps for so long that I guess that is why it is labled as traditional , also that fact of playing a completely different instrument than what you play in your band and orchestra adds to the mystique of the experience,