I don’t have the same 12v as anyone else. No need for me to lug around a heavy gas powered machine capable of 4200 psi when I only need 100. Plus, my system puts out 50% more volume than my pressure washer, so it’s much faster for me.
If I did this for a living I’d have a traditional setup, but I don’t and never plan on doing it full time. I don’t have a dedicated vehicle or trailer to mount equipment, so my setup was designed out of necessity. I only have a 4 gpm pressure washer because again, no way to carry tanks or mount a heavy 5.5 or 8. I do 90% house washing, so most of the time my pressure washer stays at home.