For your 200t and 2511t I would run a nylon filter (that is assuming you're cutting green wood with them, your rakers are properly set, and you're keeping your saw clean). They are less restrictive on the air intake.
Nylon filters are: MS200T = 1129-120-1602, CS2511t = A22600214
I had trouble with my air filter cover on my MS192T not seating the air filter completely (same style as the 200T), I had to adjust the "nut" that locks it down (so it would screw down more) by flattening it out.
Your 355T might run (depending on manufacturing date) a felt filter or a mesh filter (if it's newer). Might be good to have a top handle better suited to dusty environments, so I'd consider setting it up with the felt filter if possible.
I don't have any experience with your bigger echo saws, but on my larger saws I run fairly restrictive filters and clean them more often.