I used Mobil1 M110 for many years when the were sourced from Champion, stopped and went to OEM when they went through the M&H phase due to quality concerns, various sources, including here at BITOG showed questionable results. Factory filters (essentially Fram in a blue can) are essentially rock catchers, but Honda warranties their engines with them. Recently, testing with the new M110a, now apparently sourced in South Korea seems to show improved quality so may try one. Looked at one Recently and it looks and feels like a solid filter, I'd prefer 100% at 20 microns, but 30 has to beat the OEM.