I have a 65 gallon fimco utv going on its 3rd year. Of all the stuff I've bought to do food plots and orchard management it has been by far the worst. I'm on my second pump, countless nozzle heads replaced, several pressure guages, a new header, a shutoff valve and I can't even remember what else. I think only one boom nozzle was my fault. Their parts website is expensive and they include shipping. Their customer support is subpar but not useless.
It's to the point that through my purchases I now have backups for most things to fix in the field. The bigger issue is the wasted sprays because it shits out on me. So far so good this year (fingers crossed).
edit to second what a few guys have said. Some of my issues were self inflicted. Mixing some stuff that was ok to mix, but really needed to be cleaned afterwards and not being careful enough with storage. That said, we beat our stuff up and expect it to take a little beating without being so delicate.
I'm much better now about running a 1/4 tank of clean water through after spraying as well as trying to remember to run some dishsoap through too.