I also asked the same question. I have this cable for 3 weeks and currently no reliably. To see in the coming months (I already had a cable that Apple dropped me after a few months and according to the feedback on the Apple Store, I'm not the only one: /) I took the version 1m, that my will totally. But I can understand that this is limited if you want to use your iPhone at the same time (unless you use an external battery.)
To summarize, you have a very good cable 10 less than Apple, which does its job. I will publish my review in the coming months to see if the cable is reliable in the long term.