I live in a rural area, and end up doing all my own routine maintenance on my vehicles (both out of necessity and a desire to see things done correctly). I've been looking into the Insight engine's needs in preparation for servicing it.
The Honda 15400-PLM-A02 is a average-quality filter made by Honeywell. It is semi-universal and used by a lot of Honda's engines (for instance, the same filter is used in Honda mini-vans, Acura NSX's, and on both small 50 hp and large 225 hp outboard motors). The "marine" version of it is the 15400-PLM-A02PE (PE for "power equipment").
It has unfortunately replaced the 15400-PLM-A01, which was a better built filter made by Filtech. There are still a few online retailers selling the Filtech model (which is still made for international markets). As others have noted, there are also knock-off filters of unknown quality painted blue and sold on Ebay and Amazon as direct replacements. If you can find them, there are also some very, very high quality Japanese-made Denso filters with the same model # (usually painted black).
On my car, I will likely switch over to the equivalent Mobil 1 or the high-end Fram UltraGuard filters
Mechanic service (but not Fram's low end filters) when I begin tackling maintenance. Wal Mart carries both and they usually run $8.99 and $9.99 (living rural, my retail options are limited!) IMO, both are higher quality than the Honeywell filter.