I have a pressure washer story for you.
In as much as I use a pressure washer in a sudo/commercial way, cleaning farm equipment, tractor trailers and of course the family cars and pickup, I need a good unit.
I think to date, I have had about 5 of them. I started out with a Jenny which had an electric motor and a diesel fired hot water/steam boiler on it. It was tempermental to say the least and the steam was plain dangerous. Actually wet steam is the best cleaner and remover of caked mud and dirt and grease. A steam unit isn't a Lowes or depot special. They are pure commercial.
Next I had a Northern special. It had a 5 horse Briggs and a Cat Triplex pump. It lasted about 3 years and that was the end of the 9 lives of the Cat.
Next was a couple of box store specials. They lasted about a year each.
Finally, I had a brain fart. I blew a bunch of money BUYING pressure washers, why not get a good one with a service contract. that's what I did.
I presently have an Alladin 3500 Psi diesel fired unit with a 13 horse Honda engine, electric start of course. She runs 3500 psi continuous at 185 degrees. With a 0 degree tip, I can cut a 2x4 with just water. I have had the Alladin for about 5 hard years. It has a General Triplex pump and a water pre-filter. I don't ever use the detergent injector, I just apply the commercial detergent/degreaser with a 5 gallon weed sprayer. Total maintenance has been a new battery and a couple of oil changes and one ignitor unit which the service contract paid for and the technician came out to the farm and did it.
The Alladin is a great unit, however, the price of admission is high.....I paid right around 5K for it.