My first favorite would have to be the Physician's Formula Eye Booster 2-in-1 in Ultra Black
It is a really great eye liner, it lasts all day and holds up to my oily eye lids. It is really easy to apply because it is a pen with a brush tip versus a felt tip. Also, I find it very similar to the LORAC Front of the Line Pro liner.
Another one of my fav's is the Jordana Fabuliner
It is really inexpensive. I think it is only around $3. It is easy to use and has a felt tip. It last all day when I wear eyeshadow under it. I don't use this eyeliner when I am not wearing eyeshadow because it starts to smear because of my eyelids. The eyeshadow absorbs the oils...I suppose.
My third favorite would have to be Urban Decay 24/7 Liquid Eye liner
It really does stay on... I haven't tried wearing for a week straight....yet. It is super waterproof and not even oily eyelids could break this down. It is so tough, that I have a hard time taking it off with makeup remover. The brush is really thin and can be a bit tricky to apply, but can make thin or thick lines.
Another one I really like is the Wet n' Wild Liquid Eyeliner
I like this one better that the waterproof one. The mega liner has a thin brush versus the hard felt tip on the waterproof one. The brush makes it easy to apply. The liner lasts all day as well. I have the aqua colored one and it stays on so well, that I have a hard time taking it off with makeup remover.
These are my top four liquid eyeliners. I hope you all enjoyed and have a great weekend...