Standard drop-in filter
Pros : less noise, good low end power, low profile look
Cons : a little restrictive, sometimes no better than stock
Open-pod type filter
Pros : better intake suction, more midrange to high end power
Cons : more noise, possibility of sucking hot air, can get dirty
easily
For open pod, its better to do a Cold Air Intake (CAI)
HeXy have quite a good setup with CAI