I was in screwfix a few months back and a very angry, wet, dirty man walked straight up to the counter slammed a wet vac down and shouted "I just bought this and it leaks!!!". He was covered in black, sludgey water from head to toe and apparently his customers house werent looking too great either lol. He said he was draining a rad and didnt realise that it was just spraying straight out the side of the wet vac and only realised when he started to get wet haha.
I havnt got one, but this did put me off slightly. Although I still think I will end up buying one, what ones do you guys use?