If you got the cash, give blackphone 2 a try. It's pretty awesome. Only things so far on the negative side imho, are durability in falls and a bit lag (particularly with many spaces).
Anyways, I just feel good denying (for example) facebook to have my location, access to photos/contacts etc.
a bit of applications could bug out when you deny them too many things (for example, google maps didnt work properly because i had denied location access to google play services)