I got my Powerline III USB-A Cable with Lightning Connector in the mail shortly before hitting traveling season for work and I have to say, I’m really, really impressed.
The cord is made really well. One of the biggest problems I have with cords is the boots are often flimsy and wear out. These are really solid. I took the cord with me last week while traveling and used it with a wall charger and my Anker PowerCore 20100 Ultra High Capacity Power Bank (which has been a lifesaver time and time again) and my phone stayed plugged in securely and charged well. I would buy this any day over the official Apple cord.