I've always used K&N in all my cars, mainly panel filters.
You can clean them as regularly as you like, flow more air, and give a nicer induction roar.
Make your own mind up and check on google to ask a general question about adding a K&N, most forums explain the advantages, also read up on K&N's own website.
There's a lot of purists on this forum, I guess it might be the type of car attracts a certain audience could one say, depends on your previous experiences in life also, I've built engines in my time, done all my own mechanics and never paid for any garage services in my life. You learn a lot doing everything yourself.
I have K&N panels in all my cars, including a group a cone on my Cosworth.
OOF is not the be all and end all, everyone is entitled to their opinion, but is not necessarily the best way, find your own way an filter out the proverbial and form your own opinion.
K&N all the way over stock.