I've been using this for a few weeks now mainly for repairing/testing/troubleshooting circuit boards. It's my first decent microscope as I've mainly been using my now failing eyes (it's an age thing).
It was absolutely superb whether I use it on the monitor or the scope screen. The picture quality is really fantastic.
I find these are ideal for someone who has not used a trinocular microscope for this type of work. I got used to looking at the screen or monitor very easily without having to look at my hands and easily finding my way around the board while soldering.
I would say the only 2 negatives are the small base which isn't very heavy and really quite small. The biggest issue for me was the fact that you can't adjust the position of the lens back and forth horizontally towards and away from you. This can be a problem for larger boards if the vertical stand is in the way, there is a partial workaround in that You can tilt the lens backwards, but that only helps so much that I'm already finding a solution to fix this myself with a McBushFix (as my wife would say). As for the base, I'll just get a bigger one myself and make heavier ones big enough to mount my solder mat.