I found stereo binocular microscopes to be pretty much hopeless for electronics. A pain to use, you are hunched over, adjustment is annoying and the lighting mediocre.
The best vision device is a
Vision Mantis, bar none. Beautifully engineered and you can solder all day without feeling fatigued. No need to wear glasses either if your eyes are pretty much the same.
Now consider the cost. These are very expensive new... around $4K+, depending upon the lenses. Thanks to manufacturing industries in the west closing down, a Vision Mantis can often be bought cheap. And because they are big, sometimes they are just pick-up only which drops the cost and competition. Also, you might want to check out non-eBay auction sites. I once saw a complete Vision Mantis on another local auction site that sold for $240 - I missed it by a week

. Someone I know bought a perfect condition Vision Mantis including 3 lenses (2X, 4X and 6X) for $900 the lot. So if you have patience, shop around and eventually you will find one at a bargain price.
Quality is remembered long after the price is forgotten.