Hi I have both the power roller and the sprayer. I had 2 days to paint before they laid the new carpet and I purchassed both. The sprayer is great for ceilings just remember to dilute the paint. The roller doesn't require this. Yes there is alot of small parts but usually who ever carries the roller sells replacement parts. My friend has the paint stick. I used it for a smaller bath that I painted later and didn't want to hook up all the "parts" on the power roller. It is really handy and easy to use. Clean up is a breeze. Also at the cost you could buy two and both of you would be able to paint at the same time.