Choosing lightning to usb cable?

I've had two apple ones fail so I'm looking at third party brands. It seems there are plenty to choose from, one lady said to me that there are licenced and unlicensed products, some will allow for charging and others charging and data. I don't know if this is true or if she was trying to get me to... show more I've had two apple ones fail so I'm looking at third party brands.

It seems there are plenty to choose from, one lady said to me that there are licenced and unlicensed products, some will allow for charging and others charging and data.

I don't know if this is true or if she was trying to get me to pay for the more expensive cables.
Update: Are they all the same, will some carry data while others can only be used to charge? How about power and charging speeds?
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