Anker’s PowerPort Speed 1 is essentially Anker’s take on Apple’s 29W USB-C charger which comes bundled with all the 12″ MacBook. They are both tiny bricks using one USB-C port, electricity throughput is practically indistinguishable (the Anker ekes out one additional watt), and they will either charge which 12″ MacBook at full rate, or your Nintendo Switch if it is in mobile mode. And if you possess an iPhone 8 or intend to obtain an iPhone X, then it will also provide those the quickest possible charging rates, if you pony up to get a USB-C to Lightning cable).
You probably see where I am going for this, but there’s one large difference: Cost! The Apple charger will probably put you back $49, whereas the Anker is available for only $22, down from it customary $26.