What brands of stuff do you have? how has it lasted. Had any tools that have surviced some severe abuse? What was your worst tool purchase ever? I'll start with this one- I worked commercial construction for some time. We used to use wet dry vacs for all kinds of things often cleaning the crap out of forms before a pour. Or sucking concrete dust out of holes before gluing rod in. Often companies would go out and buy a bunch of Sears or HD vacs. the longest they lasted was about 3 weeks the average was less then a week. The rental places had theses Wap vacs. these things would take abuse for months. sucking gritty mud up for hours. The best thing about them they were so quiet. some shop vacs are not loud, compaired to, say an airplane. but you could eaisly talk over these. I am going to get me one of them, next $400 I find on the street.