They call them Cold Air Intakes because...
Hot Air Sucking, poor-fitting tube that filters like a screen door and gunks up your TB & MAP sensor with "cleaning" oil but it might sound cool
...is kind of a mouthful.
It's quite disingenuous that they calll them a Cold Air Intake. If you haven an open element filter, it's anything but cold, though you do get a cool induction noises. If you have it in a closed box, then you're back to a colder intake (like stock) but loose the sound?
The ECM and MAP in the engine will regulate the throttle to hit a target load, and the throttle is hardly ever actually 100% open. A stock engine won't target anything the stock airbox can't satisfy - that would be poor engineering. Forced induction is another storry, but you'd need to be pushing 500+ whp.
If one is honest with oneself and wants one for looks and/or sound and are aware that it nets no power or mpg difference, that is totally understandable.
That said, if I were to buy one I'd go with S&B.