I tried several before choosing the Fender Acoustic 200. 2 channels, usb input, Bluetooth connectivity, useful onboard FX, and eerily light and easy to carry. MSRP is slightly over your $500 limit, but I’ve seen them well under that. I’m also a fan of how it looks, and really like the line out - it’s been a great little workhorse for me. I’ll use it for stage fill, and send the line to the PA - easy peasy.