If the battery and speed optimizations are confined to 10 S versus 10 Pro, I'd give it a really, really good try. I think eventually I'd hit a wall with the apps that are available in the store, but that's also the gamble Microsoft is making - that eventually all the apps we'll want will be in the Store and optimized for battery life, and that is kind of what I want. VLC, iTunes, Spotify, Office....basically if I could get Google's apps, Affinity Photo and Megasync in there I'd be set.