I bought my first pressure washer from Toolstation around £200 I think.
I then had a chance of a bigger better one, I used the bigger one on a couple of Jobs and found it to big and cumbersome, and a little too powerful, I have now reverted back to my cheapy one from toolstation.
On some real green guttering jobs the cheapy doesn't fetch of all the black marks underneath the green, but its just a quick flick over with the wfp brush and re blast it, the jobs always come up a treat, takes half the time of ladders and I used them on guttering for years.