Nothing but real glass filters would survive where I go. And a good multicoating is important for resisting condensation and other forms of smudging. Flare is less an issue in compendium-shaded view camera work than with wide-angle MF cameras per se. But I have a few uncoated Tiffen filters simply because nobody else had what I needed. Most are MC Hoyas or B&W's. A black and white backpacking set might be as simple as 25 red and 22 deep orange, with X1 med green added for desert scenes. Color photography is fussier with respect to specific filters, especially with Ektar.