Which Is Best Air Filter?

[busakid08]

I have a pipercross and for one thing it drinks more gas - as for performance I do think it is up a little but nothing dramatic and only really put it in for less replacing really - used to have K&N in all my other bikes but went PC for the K8 as the reveiws were good and I decided a change is good. Sounds good though - you can def hear the intake more .... which is cool BUT does that mean more air means more dirt, tend to agree with Bugs as above, I think on a long ride I would put back the OEM