I don't have experience with UD but I boutght the Make Up Forever and Sephora brands of this pencil and don't see any difference.
Ive had better luck with Ozone but everyone is different so I'd suggest trying both . I believe Ozone is less expensive also.
I haven't tried the Urban Decay liner yet, but I have ordered it to compare. However, I have used the Make Up Forever liner for a long time now and have always been satisfied with it. It is invisible when applied and my lipstick never bleeds, no matter how dark the colour or what product I use. I always carry this liner with me and I hope you will be very happy with it!
answered 1 year, 2 months ago