Automax vs K&N oil air filter: big difference or not?

[brzicro]

I'm looking for air filter mod. Not looking for extra power, just sound!

Any experiance with this open oil filters?

I got 1,6 NBFL 2003.

Tnx

[BoBo]

I would go with K&N, but how about an RB intake if not a K&N air panel filter?