I'm fairly certain these are the same microscopes available on aliexpress under a few different names (and prices for some reason). Very happy with mine, was pleasantly surprised by the quality given the price. If you go that route, you'll almost certainly have to wait a ~month for Chinese New Year to wrap up.
Mine has a few shims and such that seem a bit hacky inside the head, but can't tell without taking it apart
. Got the articulated arm as it's used over a small coil winding machine in addition to the normal PCBs, a friend has one with boom stand and likes his too. Would definitely recommend the 0.5x Barlow as it doubles the working distance and provides plenty magnification for electronics work. -Ian-