It's my opinion, you can decide if it's worth it or not, no they are not a good choice. They are just too dang expensive. K&N doesn't manufacture them, they use Champion Labs who also manufactures filters for other brands and you can get a better filter with the same or higher surface area of filtration for a lot less money. Their literature touts attributes like construction, materials, and that nut you can use to wrench one off easie peesie, but not much on performance like what standard they meet for dirt catching and holding; though they do say 99%. 99% of what is not stated. All automotive filters that meet OEM's spec or warranty will meet a required SAE standard.
As noted Wix, which also is what Napa and Carquest uses for their house brand; Purolator either the standard "L" prefix filters or their "PL" prefix filters for less than 1/2 the cost of a K&N. Purolator has been around for many years and can be had at most stores that have decent hardware/automotive sections.
