Fluidlines were my first MAC purchase in April and I use them (I have most of the shades) every single day and don't see ever using pencils again. I still use the occasional eyeshadow as liner with Mixing Medium, but you just can't beat the versatility of the Fluidlines as both eyeliner and as a base for shadows, or as is the case with Frostline, as an underbrow highlighter.