What air filter?

[Niall]

As the title suggests, I'm looking for a air filter for my car as my current KnN is f*cked and probably a bit too small for the eventual bhp.

So far, I've thought i can either stick with KnN and get something like this:

http://www.demon-tweeks.co.uk/performanc...air-filter

Which with the 70mm neck i require, is apparently good for 255bhp

or the other i thought of was:

http://www.demon-tweeks.co.uk/performanc...air-filter

Which at 70mm, is good for 325bhp although these figures are from deamon tweaks so not 100% sure on them.

The KnN is about 20 quid cheaper but I've heard very good things about green cotton filters. Opinions?

Cheers