I would have to say Apexi for filtration...not for flow. If you are more worried about it being an actual filter and not some free flow "filter" I would go Apexi. I took mine off at 20k miles and it looked brand new inside the cone.

Whoever said Helix I would have to disagree...that filter is cheap as anything ive seen. The induction pipe is pretty well made however.

My 2c

 

I don't have #'s but I thinks the HKS RS suction is a solid way to go. I got mine used and saved $$. Easy install works and looks great.

 

well who has put an intake on and a bov on and had problems without a reflash or tuning. I have a type s bov but am hesitant to put on and buy a intake when i get my car.

 

I had the same bov with an HKS RS intake before a tune... plus an exhaust, mbc, fuel pump, etc. and no problems without a retune. Cams are a different story.