So a band I recently started playing with has another trumpet player in it. He plays some sort of Holton Maynard Ferguson model. It's a .470 bore, which as far as I know is considered pretty big. He let me play on it some during a rehearsal and again at the gig the next night, I think I really like it and so far, think it might be better suited for me. It felt like it was much easier to make a big, projecting sound on this horn than it is on my .459 bore Yamaha. It feels like I am fighting my Yamaha to produce the same kind of sound I could achieve easily on the Holton. It's almost as if I have to use pressure on the Yahama to get the same effect. Does this all sound pretty accurate? I've heard playing a bigger horn will tire you out quicker but that would be in regards to the lungs and not the lips right??