Hello again, Tan. The MX series Suzukis are all plastic, noticeably higher in quality than the cheapest Suzuki plastic models, heavier and more solidly constructed. The M-37C (and M-32C) is heavier yet, with the metal tray. I have an MX-27. The sound of almost all Suzuki melodions is good. $35 for a new MX-37 is a very good price. In my opinion, it will be far superior to a Swan.