Comparison XPERIA Z1 Compact versus XPERIA Z3 Compact versus XPERIA Z5 Compact

I have all this three Sony Compact smartphones here, so i make small comparison why to upgrade from Z1C and Z3C to Z5C and why not. In my family we use two Z1 Compact long time and i was using Z3C for year, so i think that i really know this phones good. So what is result why to upgrade and why not? Hope this help peoples with Z1C and Z3C.

Why upgrade to Sony XPERIA Z5 Compact?
+ camera (one of the best on the market)
+ performance (more than 60000 in Antutu)
+ internal storage (21 GB available)
+ fingerprint manager (perfect work)
+ support to the future
+ new functions in user interface (launcher etc.)
+ less applications from Google
+ 64bit Android and CPU

Why not upgrade to Sony XPERIA Z5 Compact?
- prize
- prize
- design (not everybody like Z5C design)
- XDA support? (see Z3+ or M4 Aqua with 64bit Android too)
- construction (compare to Z1 Compact with metal frame)
- display? (compare to Z3 Compact, which have better white)