So, I got the graco 1900 in the mail today. Far quicker then i expected it. Nice little unit. It was deff a used unit that someone returned and just resold as a refurbished unit. I like the size of it and how you can just wear it over your shoulder. Nice to have close to you and don't have to worry as much of the hose getting in your way like the 2900 or 3900 unit since its a shorter hose and that it's attached in your unit, which is held on by your shoulder strap.I prefer dealing with an extension cord then a long hose. Sam, the tech guy from Graco, was correct on the gun from the 2900 and 3900 being compatible with the 1900 unit hose. The hose is more narrow then the hose that comes with the above units but has the extra width at the end to stick into the 2900 and 3900 gun.
Now, I just need to figure out how much more water has to be added to the paint mixes when using the 1900 unit. .