I have a Henry in the garage can't fault it works with my da as well with a normal bag init AND THATS VERY FINE Dust
Henry with a hepa bag is good, without the bag is like any other hoover, as soon as filter is blocked its poooooooooooooooooooooooop
I had a Brico Depot one but after 2 years of renovation work the paper filter needed replacing so we brought a karcher mp3 premium, the old one is now my workshop vacum/blower.
I've got a screwfix own brand one that looks like a Henry. Works marvellous bag free to pick up bits of rubble, dust etc. Works fab with a bag too when I'm I'm in no spills situation. Tried it in our own house and it started lifting the carpet
I think it probably is quite noisy. I hadn't noticed it being massively loud but as it was bought just for work I wasn't that bothered. At the moment it's also being used for our home one as the house one isn't working properly.