Since the Key 2 supports USB PD 2.0 & it seems like a lot of devices are going going with USB PD. Would it be a better idea today to buy say a 30W USB PD charger, which could very likely be used by newer devices in the next year or so?
I know PD is pretty new technology & there's no way to properly predict where things are going but it does seem like PD is becoming an official standard.