I ordered this to repaint some cabinet doors. They had your typical tongue-and-groove design, making it impossible to paint an even coat without it looking all globby. While I found out the paint I was using was also infuriating other customers (Valspar High Gloss Enamel SUCKS, is NOT "self-leveling" or "easy to clean," and chips with the scrape of a thumbnail despite surface prep!) Overall, you have to clean this device quickly in between uses, but for this price point you can seriously knock some extra work and time off of a project that may take days to do the old-fashioned way. It was worth it to me! I will definitely be using it long into the future. Checkout a breakdown of various components below: Anyway, this product was fairly easy to use after perusing the instructions for a bit. While the viscosity cup provided is supposed to help indicate how much to thin your paint, it didn't really work for its intended purpose, as my paint was taking FOREVER to go through the funnel, way beyond any of the indicated times on the instructions. (For example, instructions indicate to add certain amount of water or thinner based on amount of time it takes for the paint to run through the funnel filled to the top). This led to some difficulty in figuring out how much I should dilute my paint, which led to some trial and error. However, most paint cans do have instructions for paint sprayer dilution, so that helped some! >APPLICATION - relatively easy but takes a bit of practice and increasing the velocity of the spray to ensure it is coming out in an even stream and not in splatters, which can also be affected a lot by how much you diluted it. Won't flow correctly if it is too thick. Difficult to do small applications of paint because you have to keep scraping the paint to the bottom of the container for it to be sucked through the straw. >DEVICE ITSELF - turns on easily, but I will say it the motor starts getting pretty hot quickly, which made me a bit nervous to use it for more than a few minutes at a time. Parts are all easy to assemble/reassemble. >CLEANING - While the parts are easy to clean, I frequently wished that I could put it down and come back to it later in between coats. Paint can be left in the reservoir if you seal it well with plastic wrap, but you have to run water through the sprayer otherwise it will get all dried up VERY fast with water-based paint once you turn it off. You 100% NEED a straw-cleaning bristle brush to clean the sprayer channels that don't detach from the device if anything dries up, otherwise globby and half-dried paint starts going through the nozzle and screwing up the spray pattern.
Good, and easy enough to use for the price!