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I had a big draper one for 10 years pro use and that was no more sophisticated than the Henry, just bigger with an auto start funtion which was a huge upgrade for me at the time.
Over the last 20 years I've managed to amass 4 Festool hoovers of various sizes and they are fine but they all annoy me on a daily basis for one reason or another.
I agree that using one for DIY it should be fine.
A work vac definitely makes more sense and I had presumed I'd need to get one, but our Henry is old and keeps doing the job. I guess worst case is we eventually replace the motor, but it has seen a LOT of dust over the past year as we've gone back to brick/joists and is still fine, so I think @hugo7 briefly using his friend's for paint dust will be ok.
Obviously I'd love a Festool hoover but I'd love a Festool everything!