Bird
Rest in Peace
I bought a Wagner Airless after using their corded spray gun to do the house once- (what a pain, even with a hose extension to suck it out of a 2 gallon bucket), the airless sprayer with 75' of hose makes it much easier.
I once painted a mobile home my parents had at the time on the Texas coast. Dad had bought a Wagner one quart corded sprayer and I went all the way around the mobile home twice one day. By the time I went around the first coat was dry. Then the next day I went all the way around twice doing the trim in a contrasting color. It did a good job, but terribly noisy and the vibration sure gets to your hands after awhile. If you have a lot to do, the airless with a long hose is definitely the bet way to go, but I now just have a one quart Campbell-Hausfeld spray gun and plenty of air hose back to my compressor. It, too, does a pretty good job, but requires frequent stops to refill the canister.
I've never used the Flood sealer, but the guy at one paint store said it was the best.