Hi Joshbezerra, I'm not familiar with Quest saxophones. My guess is that it is an Asian copy of a Selmer, as there are so many of them on the market sold under different names. As long as the pads and keys seem to be holding up ok, I'd just save up some money and maybe think about upgrading down the road. A lot of these cheaper Asian saxophones don't have the best pads, and the keys are made of softer metal and bend or break easy. What kind of tone are you looking for? The mouthpieces that come with some of these cheaper saxophones are not very good. If you're on a budget, try a Rico Royal graftonite mouthpiece. I use them on tenor, alto and baritone, and they sound great! Best of all, they cost around $20! An Otto Link Super Tone Master is a great sounding metal, and www.giardinelli.com sells them for around $110. The Otto Link Tone Edge hard rubber pieces are nice too. I use one for alto. I like Meyer pieces too. I prefer a piece with an open chamber, and a medium facing.

hey thanks for your advice.... so how long have you been playing the sax??