I've talked before about the quality difference between FDM and resin based printing. Last year, I bought a Wanhao Duplicator 7 when they were running a special on them. This is a DLP printer that uses an LCD screen and ultraviolet backlight to print with UV-sensitive resin. Unfortunately, I did not have a chance to set it up until today, so it has sat, boxed, for several months. Today, I alleviated that situation and I have a quick example of the quality difference between the two types of printers. Mind you, I haven't a lot of experience, so the quality isn't quite where it will be once I have it dialed in, but to see the difference in quality, these pictures work.
The orange colored SNAKE was printed using the Wanhao printer while the white one with paint apps was printed on an FDM printer. The orange one was printed at .05mm resolution, while the white one was at .2mm. The FDM printer can go down to .1mm, which is approximately the width of a human hair, but that is the maximum it can handle. The orange doesn't show the detail the best, making it look like a gummy bear, but it's the only resin I have right now (it's the sample resin that came with it). If you zoom in, though, you will be able to see the striations of the individual layers on the FDM model, while the resin one is virtually smooth.