I don't wear it every day, but I do wear it for special occasions or going out at night. It definitely seems to help my makeup last longer and gives me an overall more "finished" appearance. I use Smashbox Photo Finish.
I used to think primer was just a way for cosmetics companies to rip us off. Boy was I mistaken! I love primer!
I've got a lil' collection building, LOL:
Smashbox - both clear and the green tinted
Intuit (very moisturizing...great especially in the winter!)
Clarins (more like a cream in a jar instead of a gel in a tube but is AWESOME)
PerFekt (this one doesn't work as well on me but it's fun to play around with)
I use the green tinted Smashbox. Probably going to exchange it for the purple for brighter skin. The green doesn't really minimize the redness. The only thing I do not like about this product is by the end of the night my face is still matte but it feels, to me, oily.