I have had K & N Cai's for different vehicles...sounded great engine and exhaust notes, hear the air sucking in, and looked nice...
I had the Volant on a truck..didnt like the fitment and the air sucking in was as noticeable...
S & B intake with clear fiberglass lid on my 04 GTP...looked great, sounded great, could hear more aggresiveness in engine and exhaust notes..
Air Raid..nice fit, could hear air being sucked in, engine seemed to breathe better...
AEM...nice look, pretty good fit, awesome sound of air sucking in, sound of engine awesome,engine seems to come alive along with exhaust sounding louder/more aggressive, silver painted tube heat reflective, larger intake tube, oil free filter which I heard several times and co-worker expeirenced MAF problems occurring with the oily filters like k/n. I paid $242.oo at performancecenter.com.
Good Luck Judge...If the goat sells I'll sell you mine

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SOLD: 2006 Torrid Red GTO- Superchips, Poweraid TBS, AEM CAI., JHP Sports Gauge Pod, NGK TR55IX Iridium plugs, Vinyl decals/inlays, Lloyd custom rubber floor mats/cargo trunk mat, window tint, resonator delete, and Flowmaster Super 44's!