Harbor freight 4gpm
So, I have been recommending the harbor freight 4gpm. I've used one for about 4 years on and off. I'm pretty sure u/imnumber1 pointed out that HF started putting cheap Chinese pumps on these, rather than the AR pumps. I used my warranty on one in March of this year and it came with the AR pump and a decent hose.
That washer had very little use from March until this week, under 10 hours. It got water in the cylinder during that time. It lives on my trailer, uncovered. I changed the oil and thought it was a fluke. I went to fire it up the other day and water was in the cylinder again. Not the oil, not the fuel, the cylinder. The engine was hydro locked.
I returned that one for a new one, and to be honest I had to drive 45 minutes to find one, the 4 stores local to me had none. This new one has the Chinese pump and the stiff, slick hose.
All this to say, I'm not sure if recommend them anymore. For $750 + $300 warranty it's still probably the best financial deal, but I'm not sure it's worth the fuss of returning a poorly manufactured washer.