I'm considering buying a Z3 Compact or a Z5 Compact. Prices of both of them have dropped nicely. It would seem reasonable to buy the more new model Z5 Compact with a bit better camera. But what about the overheating issues with the SD810, have they been resolved? And the Z5 has been recently highly critisized by PhoneArena for lots of bugs in it's software, what results in lags. Anyway with all these issues I'm becoming more prone to buy the older Z3 Compact- like the design, camera is great from what I heard and outstanding battery life.
BTW-Are there any drawbacks to the Z3 Compact when compared to the Z3? (apart from display)