TOMLOV DM601 is toy/classroom grade as people said. Also it and Andonstar AD249-M are useful only for small boards. Like no larger than 5x10 cm. Even smaller laptop motherboards doesn't fit fully between lens and mount, which made such board repairs very inconvenient. Plus zoom is very limited. Swift S41-20 have same space limitations as both scopes above.
Scope under second link seems fine for the money.
I have mentioned Andonstar scope too and don't use it anymore because of mentioned bottom space issues. Instead got a set of stand camera with mount and lens. Particularly because I have 27" monitor at front of my working spot and also shop had discount on most items at the time when I searched for a new scope. Doesn't woble too if table is firm enough. No problems with zoom too.