Don't know of any reputable tests on both, one way or the other.
So far, personal opinions only. Some dislike the felt style.

Both are used interchangeably in many, many yard equipment, chainsaws, edgers, trimmers, etc., etc., etc.
Look over such equipment at your local dealer, and you'll find a mix of them in use. Depends on the mfg.

Both will such your tank nearly dry!