Anyone else bought or considering buying aftermarket USB-C charger and/or cable? If so, what brand/model are you buying? I'm looking for one of each to keep in my backpack. Unfortunately, USB-C is a little bit of a mess, as there are competing cables that look the same but have different voltage/current capacities, and same goes for chargers. As Benson+Nathan have pointed out, not being careful can toast a laptop. What do you use?