Been with the phone for a week. At first I did what everyone does and update all the apps when first signing in with my google account. Later that day I then tested the stock recovery app to learn it doesn't have a UI, if you go into recovery it immediately just wipes to defaults and reboots. So I was fresh again, I updated just google maps and installed my own apps this second time. Most of my apps allowed me to move to Internal memory from Phone. but even without doing that you have so much more space, just dont update the stock apps like gmail, books, music, google+, maps, street view, youtube. My gmail works just fine, battery usage still lasts two days.
I updated google maps the second time, but after testing it and reverting back the update I noticed no difference in using it (including navigation)
On this phone there's a weird tiling effect with google maps, not sure if its video driver or what. Happens with or without the update.
19 of my own apps installed and I have 59MB available (that includes updated google play and google play services)