I had extentions when I used to be able to afford them and they last three weeks. I loved them.
to stop my eyeliner from smearing, I wear a silicon sealant underbase on my eyes: a primer. I find urban decay's potion to be incredibly good. I used to be able to go out dancing for hours, come home, pass out, wake up and everything would still be close to perfect if I didn't rub my eyes in the night.