I have learned so much here on TM, and I know intuitively, and, as discussed here so much, that the right horn/mpc for the right person is so key, making things easier, etc. But as an adult learner in year 2 of my playing/collecting/obsessing of all things trumpety, I really did not understand what the above really meant, until recently. I buy horns that i like, mostly visually, but that have good reputations or historical interest to me. My main player has been my Yamaha 8310Z, a great horn. When i acquired my Super Artist, I loved it and understood the differences in the two, and found the Super Artist a bit easier to play as well. The Vocabell....welll....looks alone make it amazing, but its fun to play too, but different, and a bit more difficult for me. And then the aha! moment.....The Selmer Armstrong Special. My instructor heard me play it and within a few bars said "I think you found your horn". My tech (Ivan) even commented on how well it plays (and he does not hand out horn compliments easily, LOL). I have played a limited number of horns, but even I knew this one was different. As I continue to practice and learn, i was stuck at barely being able to squeak out a G above the staff, E was even a struggle unless really warmed up well. After a month with the Selmer I am squeaking out high Cs, the G above the staff sounds great, and can be played without warmup. If you ever get your hands on one of these, try it. This is great motivation and just fantastic personally because now i can play just about all the music i set out to play in my trumpeting hobby. So, it is so very true....the horn matters, soooooo much. Which horn gave you all your "aha moment"? The one you knew was different and fit you best?