I'm considering the 15 Pro (I hate to spend money but I'm out of storage!) and looking to pick up a MagSafe charger. I think I saw the Apple one charges at 15W but does this only happen with certain charging bricks? Apple suggests the 20W charger but if I had an Anker charger that charges at more than 20W would I be good? What if I bought one of the several Apple ones? I'm thinking getting one with 2 USB-C ports to charge iPhone and Apple Watch.