I second the Prestige Total Intensity eyeliner. It's a great Urban Decay 24/7 gel glide on dupe. The Kohl ones are not as good, in my opinion.
If you like gel liners, the E.L.F. ones are good. I used to use that but lately have been too lazy to be bothered with a separate brush, etc.
I do not recomend that Milani liquid liner. I had read good reviews, too, but it goes on super uneven and I had to apply two coats, which was frustrating.