Within recent years, these companies have branched out on this high end stuff and issued several different so-called professional instruments. Then there are the bore differences, the extra key possibilities, and now even the German bore models. It fairly boggles the mind. The great conductor, Pierre Monteaux, said that the best played orchestra is the best PAID orchestra, which may be right, however I do not necessarily believe that the best professional instrument is the one that costs the most. All of this is not just verbosity.
Teachers are notoriously hidebound when it comes to picking a good instrument.
But I said that when I played the Leblanc L45 or some such marking. And I most certainly said it when I played a Selmer Mazzeo System or Selmer Recital or Selmer Series 10. I said it with them all, and believe me I have left out plenty, to say nothing of 3,000,000 million mouthpieces. They say that life is a series of endless choices, well almost endless. Each morning you awaken and there is a whole new arrangement out there for you to add to, to change, to repair, to ruin, or what have you.