I have been playing trumpet for roughly 2 1/2 years. Now I am a freshman in high school and are playing second trumpet. I can play the first music but there are a bunch of good seniors this year, so seniority gets it. I have a concern though. For about 4 months I will be great, my lips will be in great condition. I can usually during that period, get a solid Eb above staff. Then for about 1 1/2 months, my lips suck. I have trouble with range, and my endurance is less. I get a weird extra buzz when I go anything below a staff G. It's a process I go through every so often and then it gets better, but it's just something I want so other trumpet players opinions on. As a sidenote, I am playing on an Yamaha 11B4, but am thinking about switching to a Vincent Bach 7c so I can get a better, rich, dark tone for symphonic band now that marching season is over. I was wondering if that is a bad idea.