Hi, first timer here! I want to by a frettless, but i don´t know how to choose, so i need some help. I´m thinking on a 5 string, instead of a regular 4, but only because i want the upper C, not the low B. Is it worth it, or should i get a 4 string? Could you give me some examples, basses to by, not to expensive? Thanks for the help. Tiago.