@freediver Littlefuse and Bussman make the best fuses around IME. Just for fun, you might obtain some and then do the same listening test that you did in your post just above.
BTW running an overrated fuse is bad advice. If for any reason your equipment failed with an overrated fuse in it, even if the fuse was known by some to fail earlier than stated on the label, your warranty would be void. If the fuse actually held to its rating, it could start a fire if there was a component failure.