...but with a K&N filter
i like factory filters on bikes they just seem to last longer
How do you know they last longer? I use OEM too because I've seen enough filter studies that I'm not sure which brand is a good option.
The guy over at calsci dot com has a boatload of data on motorcycle filters, new ones cut apart, etc. According to him, the OEM's are OK, but not superior, and the K&N's are suspect. He also notes that because Suzuki uses the oddball threads, there are not as many quality filter options as there are for other motorcycle brands.
My local Yamaha shop carries Emgo, which rank as good as OEM (according to calsci) for exactly half the cost of OEM.