I also use fluidline as a base but not quite often. It's a bit harder to blend and dries up quickly compared to paints. Also, I've tried frostlite before. It's a good base for my e/s but it's too white/gray for me since I'm NC40. I like rich ground and blitz glitz tho for smokey looks and delphic under my green eyeshadows. My eyeshadow never creases when I use these; however, I feel that it's a bit heavy on my lids, as I also use UDPP underneath ( I have extremely oily skin!)
On the other hand, I use paints regularly. When I want a more dramatic look, I layer CCB on top of that and my eyeshadow really pops and stay on for at least 12 hours without creasing. HTHS!