Back in my reddit days, there was a guy who did AMAs about vacuum cleaners that was actually incredibly informative. After talking and analyzing many machines, he suggested s couple vacuums. For my needs we got a Miele canister C1. It wasn't cheap, but 8 years later it is doing very well. No fancy circuit board, straightforward, solid manufacturing, 8 year warranty, a dial controller for the suction. No problems at all. Probably will last another 20 years. It's a great machine and has paid for it by not needing replacements. The closest thing to a complaint is that I wish the cord was about 1.5 -2m longer so I didn't need to unplug it to change outlets 2/3 of the way through, mostly because I'm lazy.