Re: No microSD AGAIN
If waterproofing and external sd are important to you go for the Xperia Z. Camera is excellent, especially with tweaking, the screen is gorgeous and it's very comfortable to hold (better for large hands).
I've had sd cards and removable batteries on previous phones (except for my iPhone). Almost always I've ended up putting an sd card in the phone and not changing it - so whilst I like the idea of an sd card I don't use that feature. Battery wise I bought replacement batteries which I carried round, but again nowadays I don't even bother with that. If I'm away for a few days I use an external battery pack, otherwise I just charge up at night or during the day - so again a removable battery is academic for me. Most phones these days (not all) can get a decent charge pretty quickly. And the benefits in terms of design flexibility and robustness make a sealed battery something I'm happy to live with.
I did have a n s3 get wet and stop working (even tried the out it in a bowl of dried rice- no luck). I took the sd card out but that didn't work either (a 32gb Samsung sd). So now nowadays,I just sync my photos with picassa over wifi when at home (the iPhones auto upload at home, using photo stream is how it should be- dies it without asking me when on wifi).
For me it's a close run between getting the htc one and the Xperia Z. Both of those give me more that matter to me than the S4.