Taco Coated half the price of Polor Pro.
Read some have difficulty installing and removing P.P. due to tightness of retaining ring, can be customized. Toco uses a sponge or felt type material which over time may ware. Bright sunny Summer I leave on and use the same filter, don't see ware as an issue. Time will tell. I expect P.P. Is the better quality filter but Toco works great for my non professional use.
Read "Lens Filter" threads on Mavic Pilots and reviews from other individuals for more info.
Good shopping to you.