95% of my tools are Milwaukee with some Festool stuff thrown in. When I bought the flex tools they where over seas. I wanted a drywall sanding system that was cheaper then Festool and this is what I found. As for buying anything else they make that would be a No. I have a post in the shop under Mobile shop and you can see the vac.
As of right now I own 2 Flex tools. The FLEX VCE 33 LAC 9 Gallon HEPA Vacuum and the FLEX GE 5 Giraffe Wall and Ceiling Sander. They are very well made and work well. I have had these tool going on 5 years now and have had no complaints.
It wasn't to bad. Back in the late 70's I shot high power rife competition. I had 2 FN30-11 sniper in 308 Karl Kaps scope, and the Anschutz target sight. I made a straight up trade one of the 30-11's for the Scar.
I use the Milwaukee M18 mud mixer and have never had any trouble mixing. I have used it to mix thin set for tile setting. Mixing drywall mud and mud for parging block walls. I have had that mixer 3 or more years now.