Try forced induction from an air compressor. It'll be like NOS mann!!!
On a serious note, you're not going to get noticalbe gains from an air filter, although some people will say you will.
I use a K+N simply because I can reuse it, induction kits are all about the noise really, you can even set up your stock box with a cold air feed that will do the exact same job as a pipercross system.
So yes, all filters in essence are the same. They're marketed to give performance gains, but as I said, you'll be lucky to get anything unless your current filter is made of glass.