i have
kevlar and sintered pads, multiple pairs in multiple bikes with varying amounts of usage/frequency
plasma chain device
another DH chain device
pair of wheels with mavic rims
several tools including the ball ended allen keys
tyre patches
NOTHING has broken/fallen apart/caught on fire or expired before a fair usage time.
i will continue to use superstar as do most others – they are cheap, swift to deliver and their kit works,
as a footnote most people realise that it’s not the owner building and manufacturing these products and as such he/they are as open to problems with batches poor builds etc. The difference is there gear is always cheap. Having not had any experience of his customer service after purchase i cant comment on that, but that is because all the stuff i’ve had/use works faultlessly.