K&N = simple, works, and you don't have to take anything out that you'll regret losing. As far as short ram intakes, Weapon R isn't a bad brand at all, they've been around for a while and do their job.
You'll spend a lot more money than you would by getting a K&N from an auto parts store for around $44 though, it'll give you horsepower and save you money in the long run when you won't need to replace the filter for the life of the vehicle.
Thats actually what I'm doing man, lol.
I ordered it today and should be in on tuesday.