Considering both function and appearence...what is your opinion on the best intake system?

 

I really really like the ARC intake system. Here is a picture that is from iwant2bys2k's (pics from Jhoff)

 

best function? Well, definitely a CAI like Injen or AEM V2. As far as appearance, well then ARC. If you want both, then maybe J's or something like that. In the end any peformance gains are minimal. Just go with the one you like the best.