Hello, I need help buying a trombone to carry out my studies, these options were presented to me for my budget and I don't know which one to choose: -Getzen 525 -Conn director 50H with some wear -Sierman stb 665 almost new They are all models that I don't know but it's what I can afford, and I don't know what to choose. Translation: Hello, I need help buying a trombone for my studies. I was presented with these options for my budget and I don't know which one to choose: -Getzen 525 -Conn director 50H with some wear -Sierman stb 665 almost new These are all models that I don't know but they are what my budget allows for, and I don't know what to choose.

En inglés, por favor