YA IT ROCKS! Plain and simple! I use the devilbiss DeKups system because its cheeper but same thing. I got a bunch of the devilbiss stuff, 9 and 24oz, a full box of each (32 liners in a box). Enough to last me probably a lifetime. I love it. Clean up is much easyer and you dont use any cleaner fluid except a squirt in the gun. Unscrew the cup, pull the liner and toss. Fill the adapter with cleaner and shoot out. Done!
I mix the paint right in the liner with the plastic meter guage, cap it off, and shake. I dont even strain it. No need for strainers, or sticks, or mixing cups.
Dont even think about it just buy it now and enjoy! I never painted before last fall, but i bought a devilbiss gun, all the DeKupps stuff, and a bunch of other crap. Painting was so much fun i wish i had more to paint!!
Check out my first paint job ever!! And check out how i painted on my back!
That stuff i was painting would have been impossible with out the cup system.