Looks really nice, but it's also double the price. For me, the upgrade from the Andonstar A1 (40$) to the ADSM201 (160$) was definitely worth it, optical quality is massively better. But from ADSM201 (160$) to ADSM302 (300$), I'm not sure.

Also, from 300$ it's not that much more that you'd need to pay for a proper stereo microscope.