The smaller sprayer market (60 gals and under) seems to have lots of different products with lots of different quality issues. Then you combine the lack of care or just the fragility of many of the components. It seems to be a lottery in what you buy and how well it will last. My suggestion is to buy a recognized brand for which you can purchase spare parts, at least you will be able to do maintenance if you need to. I always get my sprayer out about 6 weeks before I really plan to use it to try it out and ensure all is good.
There are lot's of options from PTO driven 3pt models to tow able, atv models, UTV models and skid models. If you are not looking to invest a lot do not expect great quality. Make sure you clean everything after use and fully drain the unit, find somewhere to store it where it will not get banged about.
I wanted a 3pt PTO sprayer but eventually purchased a Demco 60 Gallon skid version which runs from a 12V pump. I purchased the Demco as I got an old stock but new unit that was heavily discounted. Like you I spray maybe 10 - 15 acres a year, I'm onto my 4th year now and no operational issues.
There are so many options it hard to make a decision and work out how much to spend. Good luck in your selection.