I went with the K&N mainly for the cost. I needed to replace the stock air filter after only 2500 miles and I couln't find a replacement for less than $29.99. I would be spending $120 a year just for air filters, so I went with the cleanable K&N for $54.99. They say it helps the bike breathe better, but I put the K&N and the Yosh on at the same time.quote:Would you recommend the K&N?