I went from an inexpensive Badger single-action external-mix brush to this. It's like going from a skateboard to a BMW.I had absolutely no problem getting used to the dual action lever. It was like I had used it all my life. Very intuitive. Three or four test sprays and I was off to the races.I was doing detail work on seven theatrical flats - these things are each the size of a sheet of plywood, and there were seven of them! I painted all over these flats in multiple colors (I'm glad I had also ordered a box of a dozen extra paint bottles). This brush could handle whatever I threw at it. My index finger cramped up a couple of times after hours of spraying - I figured out how to work the lever with my thumb with good results. The width of the spray is controlled mainly by the distance to the workpiece. I could easily spray pencil-thin up to about two inches wide. Any further and the results are not very well defined (which can sometimes be good).My old brush would constantly clog (the paint would dry at the tip of the atomizer nozzle if I didn't spray for a couple of minutes), and I had to adjust the height of the atomizer nozzle every time I changed paints (because they would never be the same viscosity). It was usually trial and error to get the height correct (mostly error). This brush doesn't even HAVE an adjustment - it just works with whatever you put in it. It will even spray latex paint unthinned, but not as well as mixing in a little water.The only time it clogged was when I sprayed some old paint that had some gloopy bits. The brush is not really designed for easy cleaning. You can clean the nozzle easily enough, but not the part between the hose connector and the nozzle (where the gloopy bits of paint got stuck). I had to soak it in that stuff that you use to clean dried latex paint off of paintbrushes and then spray some of that stuff through the brush. It has never clogged when I was spraying clean paint.When using it in gravity-feed mode you don't use a bottle - you put paint directly into that little cone-shaped cup (usually with an eyedropper). It doesn't hold much, and you will go through it pretty quickly if you use much air.My only complaint is that the paint bottles are glass. I was forced to make an exception to my "no glass allowed in my garage" rule. Using clear PET plastic would make more sense.Having a set of cleaning brushes will make cleanup a lot faster - especially cleaning the tube that feeds the paint from the jar. It takes a long time to wash paint out if you are just running water through it. Since you only have one of those tube/lids, you will clean it a lot if you are spraying multiple colors (as I was doing). Cleaning brushes will make that job take seconds instead of minutes. You might be able to get by with pipe cleaners. The airbrush itself is easily cleaned by just spraying water (which is driven at a much higher pressure).What a fantastic tool! Expensive and worth it!(If you find my review helpful, please "like" it - thanks.)