I'm using LUMOS base and top coat at the moment but I'm finding that it's starting to yellow around a week being on me. Now I am a smoker but have never had problems with staining of my nails or fingers in the past and have never had polish discolour on me before, I was using an orly base and top coat for years before I trained and bought LUMOS. So I'm thinking of getting CND sticky and CND super shinny to see how that holds up. Mind you I get bored of the same polish after a week, so normal change it.
Only reason I don't wear Shellac all the time is I can't stand the re-growth after 14 days and read on here that changing it too oftend is not good for your nails due to the remover.