HP and TQ claims on a CAI (no matter the brand), while they are real on the dyno, do not translate to the REAL world in your truck, especially without a tune and down pipe. It doesn't matter who's dyno test you look at, they're all within about 5HP of each other, and you have to realize that they are usually only done on ONE (rental) truck....and it is BONE STOCK. Regardless, you don't really feel anything from the driver's seat.
CAI's are for looks, sound, and to keep you from having to buy new paper air filters.....that's about it.....dyno numbers may be real, but they are mainly there for marketing purposes....I.E. fishing lures to catch fishermen.....
Buy what you like the looks of, and what you are comfortable with quality wise after doing some research on reviews.