Well the general climate of opinion seems to be that EITHER they are
impossibly difficult to fit into the ear properly OR that they are too heavy
to stay in for longer than a few seconds

No one has given an opinion on quality yet: The highs and mid range seems to
be OK but they might be a bit lacking in bass OR possibly the iPod Mini
doesnt put out enough to drive the bass drivers in there?

Haven't checked the eBay link so I have no opinion about that particular
unit.