I got mine from Camskill, it was £40 mate. The advantages are a better noise, slightly better throttle responce and might get some difference in fuel consumption. But it will be neglegable! Lol!
I think Arran has covered all of the bases there. I got mine from Camskill too, only took a few days to arrive and worked out £15 cheaper than K-Tec which was a good result.
just think of it as being never having to replace the standard paper filter again and also the imporved filtration - everything else is "subjective" :thumbsup: