Hey Mark, once you get the hang of how to adjust the flow rate, it is pretty slick. After a little playing around you find you can hit the button on the handle every once in awhile to keep the proper flow rate. Clean up is pretty easy, basically you pump any remaining paint back into the paint pail, and then go outside and hook up your garden hose to another port to wash out the unit. I then soaked the rest of the components in some warm water and the paint washed/brushed right off. It also comes with 2 adapters/pads to paint around the perimeter of the room and corners to prepare for the rolling steps. Beats the heck out of using a brush and being careful. Now if you have the flow rate to high, you will get a little paint spilling from time to time, nothing a rag can't handle.
Not sure if I'll work again tonight as I can't lift my arms from yesterday's paint workout