What Air Filter Should I use???

Hey guys,

I got a 2011 Acura TSX and am planning on getting a new air filter for it.

I'm trying to go with something that is good on performance(Acceleration, MPG, etc.) but at the same time does not mess with the car's quality.

I was thinking of getting a K&N air filter.

What you guys think?

Is it worth getting the K&N air filter?

Again, just looking for what is best out there.

Thanks