This argument has gone on for ages with diff peeps. If I had a prob with my chips then I would scream at my suppliers! But I don't, so I won't.
Here is a link showing some very authentic looking Magic3 clones.
http://www.modchip.ca/install/ps2/magic/magicfakes.php
Those that manufactured these obviously put more effort into the appearance than the functionality.
Why else would so many be happy with Magic3 if there wasn't some good suppliers out there?