I used an ITG panel filter for a while but didn't see the point after about a year & just stuck the good old standard back on...
Standard paper filter is best but most change them aftermarket due to benefit of cleaning them etc, itg, pipercross and k-tec panel filters are most popular
Yeah & that but you need to clean them & re oil them, plus mine was torn for some reason! Couldn't be bothered with it & just stuck to standard.