Even with all the disadvantages, the $100 price tag (on sale) makes them too attractive to turn down if you need one, and in the desert with limited water, you need one. For the past years I've bought one every two years because of the various problems. Then I decided to just replace the various parts as they broke to see if it would save money. It didn't.
The replacement lances don't fit well and fall apart faster than the factory original. Even if you change brands, they are pure junk and work until you get about half way through a job then fall apart. I had one turbo nozzle replacement blow apart the first time I turned the washer on. Basically, the various manufacturers supply shoddy devices.
Notice how I keep running into this? I know I'm not alone, but many people just put up with it or give up and hunt for some other solution to whatever device fails them.
I decided to see if I could overcome this problem. Since most of the problems are with the lances and nozzles, suppose I got a good lance and put it on the washer? The good lances are metal (brass and stainless), cost about the same as the factory replacement plastic, and are tough as nails. So, after much research, I discovered that most power washers have a common fitting: an M22 female. That means I can get a hose, pressure trigger (the gun part), extension and nozzle to replace the junk the manufacturers provide. Since the lance and hose will last essentially forever, I should be able to move it from one washer to another as I wear the motors and pumps out. The motors and pumps are too expensive to replace, cheaper to buy a new washer on sale and toss the old one; along with the junk plastic bayonet connected lances. Here's the lance that blew apart the first time I tried it: