I have one of the FIMCOs from TSC that is 60 gallons, about 8 years old. I have an 8 ac hay meadow and another 15 ac pasture that I treat around 2-5 times a year. Herbicide and insecticide for armyworms and stem maggot. It has the 10' boom with 7 nozzles on it and except for my screw ups, has held up remarkably well. Before I ever sprayed with it, I changed the 1/2" diversion and pressure regulator hardware to 3/4"and haven't regretted it.
Like any other sprayer, if you don't care for it, things will break. Not draining the lines and pump before a big freeze will bite you. But overall, I consider it to be a good deal. If I need really good coverage, I put out 30 gal per acre so can do a 2 ac load. Yes, it is time consuming but I have the time. I can lower the pressure and change nozzles (currently using air induction) to get more acreage per load.
I don't have experience with the other you are asking about.