I am looking for a recommendation for a shop vac that actually does what it's supposed to do. I currently have the large Shop Vac brand and a large Rigid vac that has dolly wheels and a dolly-type handle. Unfortunately they BOTH suck but not in a good way. Neither one has been very strong from the get-go and the Shop Vac latches are constantly coming undone. If you have experience with a brand that really works I would love to hear from you. Thanks, in advance.