I bought a new Kanstul 1503 for my son James last spring to replace a beat-up school loaner. Ceth set it up nicely. The Kanstul has boosted James' jazz playing tremendously and his confidence too -- now a senior in HS he is first chair trumpet in the Honors jazz band. Their band came in 1st place in a competition in NYC last spring. Delfeayo Marsalis gave a clinic at his high school this month and Marsalis commented that James had a really fine trumpet tone -- wow what a compliment!