I have to put in my order today which one works best but will not get annoying with the sound later on in life owning the car? If someone can let me know a little about each thank you so much.

 

if you are worried about sound just stick with the stock boxes and drop in some filters. they all add noise and little to no HP gains.if i had to pick one, it would be stillen, just because i like the way it looks, and i have the Gen 3 and its a pretty well put together intake.

 

I have r2c intake. they give the most HP/TQ compared to any other short ram air.
also r2c comes with great heat shield.

 

buy my R2C, they are for sale

 

Honestly, this kind of question has been asked like a buzzillion times, so you'll have better luck searching and reading through threads like this (picked at random from a 20 second search effort) https://g35driver.com/forums/v36-eng...vs-others.html and others like it, because they will have more responses than you're likely to get with this thread in such a short time frame.