Those nozzles are ok. I tried them once and found them rather fragile. My preference definitely goes towards the AI 110 nozzles. It is true that they keep drift to a minimum. I use them for all of my herbicide and fertilizer applications. I do not have to worry about drift until winds go over 15 MPH. I really need to snap some pictures of a folding dry boom I made that goes on the bumper of my truck. It hangs 18" off the ground and has the nozzle bodies with the check valves to prevent drift. This is powered by my skid sprayer and controlled electronically from the cab of the truck. 2 acres of grass would be no problem for me. I have done as many as 12 acres in one day with this set up.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738