I'm an ex-user of Lubuntu. I have used the 14.04 and 16.04 version but was looking for something even lighter... I have tried many different lightweight distros and WattOS is one of the leaner choices available. I am not a user that keeps the "default" applications, I usually remove nearly everything that is preloaded (due to different preferences) but I think WattOS has optimized LXDE (or the backend for that matter) because it runs slightly faster (and uses less RAM) than Lubuntu. I would be interested in hearing Biff's response to what and how much he edited (rough estimate is fine, of course).