Very confused. So many choices. So many reviews. Give me the best under $150, please?
How many gallons do you want to carry? I have a 4 gallon backpack, and that is enough for me. Water weighs 8.3 lbs per gallon, so that's 33 lbs, plus the weight of your sprayer. When I spot spray weeds, I need to refill it about 2-3 times.
I think you can find good sprayers at most farm stores.