In around 2012 I bought a fairly basic Mac Allister pressure washer from B&Q (which, if memory serves cost less than £50). Although it isn't used so much these days, it has seen a lot of action in the intervening years. That has included using it to clean paving slabs, but mainly washing my van. Still works though the lance hose is getting pretty worn in a couple of places and sometimes it takes a minute or two to build up full pressure. Only other thing I've had to do is replace a rubber grommet on the hose connector.

Can't say how it compares to others as this is the only one I've ever owned, but it has done (and still does) what I need it to.

I’ve made the mistake of buying two Parkside washers from Lidl each lasted a couple of years absolute rubbish. I’ve now got a Stihl which will probably last as long as my Honda Jazz.