Face Primer

Last day of half term today. Boo! It goes so quick. Anyway, I have been thinking about Face primers. There are so many to chose from. As well as being used to create a good base for foundation, some primers can be used on their own to create smoother, pore free skin. I love Maybelline's Baby Face Primer as it reduces the look of pores and generally improves the look of your skin without foundation. It also works well with powder on top. Smashbox is very good too although it is very expensive. What primer do you think works best?