I forgot to mention Flickr, as another poster suggested. It could be easier to use, but it is a free terabyte, and it is a beautiful app.
The reason android has so many app updates is because there are so many devices. Every time a vendor releases a new app, or version, they find new bugs for one or two the millions of different android phones. Since you have a very mainstream phone, it is unlikely that any of the minute bug fixes that get released after a major update will have any effect on your phone.
I honestly ignore most of the updates until I hear a bout a major release, and then I go through and update all of them.
I used to be one of those guys that rooted and customize every phone... But now, I just leave my new stuff factory. I might be missing a few cool features this way, but at least I have guaranteed stability and if something did go wrong, I would know it isn't because of a custom ROM.
I guess my final advice is, pick something and stick with it. Since you have a good bit of onboard storage, use Google play music for your music, and Flickr for your photos, and back everything up with helium. Google will automatically match all of your music from your computer onto the cloud and store it. Flickr will automatically sync all of your photos. And helium will back up everything on your phone to Google Drive. Don't download a bunch of redundant programs doing the same thing. Keep the phone clean, and you will get good battery life and less clutter.
End of speech.
Posted via Android Central App