My personal preference after two year factory warranty has always been the K&N, with Mobil One V-Twin, but that is just me.
You can read about filter efficiency and micron size (the smaller the number, the smaller the particle it will filter), you can read about filter bypass (when filter is too restrictive due to cold oil or clogged filter media, it bypasses the filter altogether). You can read about oil temperature, viscosity, oil shear, thermal breakdown, etc. I am sure there are people here with 100,000 miles on their bikes and only ever used OEM filters. There are some that only change their oil every 10,000 miles or longer. But there are also people who needed a new motor after 18,000 miles and changed their oil every other week. In the end, it is whatever makes you sleep better at night.