went from Galaxy S2 to the Z1 compact about 6 weeks ago.
– Great camera in good light, average to poor in low light
– Nice solid feel, not dropped tested it yet though. It does have a glass back so may be worth getting a bash case if you are clumsy with your phones
– Being waterproof is a nice bonus. I’ve not submerged it but used it in heavy rain for the day without issue
– Battery is good. Average daily use (facebook, spotify, STW etc) will see it to about 50% battery by end of day, low use it will still be at 75%
– Size is ideal, I have a tablet so wouldn’t want or need a phone any bigger than this.
– Seems to be the only compact phone with the same internals, most others dumb down the processor or memory.
– Some nice touches on the software but also plenty of Sony apps that I am unlikely to use.
– Performance is fast, has not crashed yet and no noticable lag.
Only six weeks in for me but I cannot fault it.