Prestige Total Intensity Eyeliners (Deepest Black)
~$6 at CVS, Walgreens, Rite Aid
Urban Decay 24/7 Glide-On Eye Pencil (Zero)
$19 at urbandecay.com, Ulta, Sephora
Prestige definitely wins, I honestly think almost $20 is ridiculous for an eyeliner.
Urban Decay has 24 shades, a good mix of bright and dark colors
Prestige has 8, mostly dark colors
Pigmentation and Application
Prestige is darker and both apply the same, without any dragging.
Prestige on left, Urban Decay on right
On the lid, they wear the same.
Prestige after 5 hours
Zero after 5 hours
Right after application
After allowing to set (about a minute)
Both stand up to water well, but Zero doesn't smudge very much at all.
Personally, I prefer Prestige's eyeliner over Zero. It's much cheaper, darker, and wears just as well.