Ok I would like to know which CAI to get for my 2010 f-150, 5.4L. I have it narrowed down to K&N or aFe (stage 2). Could someone give me some advice on this?

Probably never go wrong with choosing the established long standing K&N. I have an AFE on mine, but probably only because they were the first on the market for my model. No complaints out of mine. Here is a link that will maybe help.

http://www.autoaccessoriesgarage.com...ems/K-N-vs-aFe