To complain I have is that the cable is rolled up so that the package does not close completely and a large gap can and that the supplied product information (Lightning connector with USB connection, compatible with all models with Lightning connector) is quite poor. More can be read on Amazon though, but such information includes physically for me to the product.
Conclusion:
For 6.99 (as of March 2015) to make this cable nothing wrong. Without direct comparison drop to no difference to the original. Optical, tactile and functional makes zigga cable (after a short test period of two weeks) the same impression as the cable from Apple.
The charging cable I was provided free of charge as part of a product testing platform testberichte.reviews. The review was not influenced and reflects my personal opinion.