I have been spraying now for over 10 years, and still lean some thing every time i get one of them out of the van. My first spray which i still have and use for priming on steel contracts that we do is a Titan 4401, very good sprayer, for such a small machine.
We have now moved into all sectors of spraying in construction , we use a Graco Mark V for spraying Nullifire fire retardant for steel, the Mark V is an all rounder, with lots of power, to spray very heavy materials, and also operate to spray guns at the same time very handy when spray very large areas.
We have two of these machines , we use the other one for spraying plaster , some thing new we have just moved into, early days but we have done some very big contracts, the hole reason for doing this was to get contracts at the very start, if we plaster them we paint them, perfect sense .
We also have a Graco Finish Pro 395, now this is the one i really love , this is two machines in one , an Airless, with a onboard compressor built onto it, so that you can switch between airless, and Air assisted spray for fine finishing.
We never use the Airless function on this machine as we have other sprayer for that and i would not like to put running time on the motor for Airless spraying.
In all every sprayer we use has its own specific job, we learnt this over many years of spraying.