Lol. I just want the injen for the sound. With a cai you're really only gonna see nominal increases anyway. I may be wrong, but in my experiences modding cars, I'd bet outside of engine noise, you could swap a cobb, injen, and a stock box with a hole cut back to back and not tell any difference in the drivers seat. With such a small engine and turbo, I doubt you're gonna see much gain in real world performance. I've always seen intakes as cosmetic mods.
Which is why I'm going with the injen. It's red, it's shiny, it's cheap(er), and it's gonna make my car sound like a harrier jet. Anything else it does is just a plus.