I think of it in terms of future proofing. My app usage is generally as follows.
Productivity: Office* and assorted MS apps*
Email/Cal: Outlook*
Browser: Edge*
Assistant: Cortana*
Owned Music: Groove*
Streaming Music: Pandora* or Spotify
Podcasts: Grover Pro*
Wearable: Garmin*
Messaging: Whats App, Messenger*, Skype*
YouTube: MyTube*
Social: FB*, Instagram*, Twitter*, Ouga*, and Edge (for G+)
Banking: Edge
Various Science Apps
Ereader: Kindle, Kobo*, Freda+*, Edge*
These apps cover probably 90% of my phone use and all those with * are UWP so no matter what flavor of W10 it is in the future, they will work and be pretty much the same.