Summary: The 5C is almost always the next recommended step up from the beginning 7C size. I often move my middle school students up to this after a year or more of playing. It all depends on the individual. I have even started students on these when they have bigger lips as the wider rim allows them to buzz more easily. The change is tone quality is almost always instant, with many non-musician parents noticing a big difference.
Summary: This mouthpiece was purchased as a required tool for the instrument repair program I am currently enrolled in. It is made of a high quality silver plated metal that is very easily cleaned and very durable for everyday use. The cup is a general medium deep that provides great resonance and tone for most players.
Summary: I previously ordered this same item in May of last year. I did not open or use it until Fall when it was intended for a particular band/performance. When I opened the 5C box, it had a 3C trumpet mouthpiece in it. When we finally contacted the company. We got 2 replies. One stating they would exchange it if we had all the enclosed paperwork and original box; the second said "no, too much time had passed" and they wouldn't do anything about it.