I have a one and it works well for me. Just wondering though how you guys go about handling your liquid apps? I take chemical along and mix with some water that I have or use the home owners garden hose. I don't really like that method. I do have a 500 gallon tank that fits in the back of pickup that I could use but should I just fill it with water and use a pump and battery to pump water to the PG or should I pre-mix the entire tank? I like the tank with water idea and mix as I go but that also takes time, chemical in the back of truck etc vs pre-mix the entire amount but then I do need to mix the chemical differently in 500 gallons than I do within my 8 gallon PG tank?? Fall is coming and I would like to iron out a better system of liquid apps.