Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

I debaffled my airbox the other day and it worked a treat. Great noise and noticeable throttle response improvement even on my 1.0. But i still have the standard paper air filter on there and would like an improvement. I can get both Pipercross and K&N Filters for 35quid, not sure about green cotton, but what would you recommend? Preferably votes from personal experience. . .

have a green cotton one on my ibiza highly reccomened!
altho its a totaly diffrent car you can really notise the throttle responce and the general smoothness of running is much better.
had a K&N on my old corsa sounded nice but didnt really help powerwise,
never had a pipercross so cannot comment on them lol

id go for greencotton personaly