Hondata- quite pointless, no real benefits, you won't really even gain any noise, nothing performance wise either, plus you'll be hacking up your air box
K&N Typhoon/AEM V2- cheap, makes a lot of noise, will do nothing for performance, debatably it will run worse
Tegiwa M/Gruppe M- very loud, pretty much the best for performance, looks great, they are expensive
AEM CAI/ Injen CAI- along with the Tegiwa/Gruppe M, these are also one of the best performing, not hugely loud dues to filter placement, theres a risk of sucking water with it, leaves a bit of a hole in your bay, good value for money
Mugen Airbox- Bling item, its the same as the standard in terms of sound and power, they're expensive