I get what your thread was, sorry if I went off topic . I saw some people sharing their experiences with other Samsung devices and I felt inspired myself hehe. I didn't intend to rant at Samsung, S5 or anyone, just a personal opinion .
For Sony camera app I completely know what you mean! When I installed a custom ROM on my X10 Mini Pro I really felt the lack of the camera app hahaha! And now Z1 is great for me, reminds me of a Cybershot camera (you know, those small ones).
By the way, I ended up forgetting to ask a question :P. I saw some pics of S5 and it looked a little bulky, do you feel the difference in it? Also much do you think they've improved from the older devices build? Because personally I didn't like build quality of S4, specially after some time the back started to get scratched, but I did like how the bezels were small, which I think they didn't do in S5...
As for your question the S5 is nicer to hold, it lighter (good or bad that preference), its rounded edges make it a little less harder to hold. I do like the textured back which has a nice grippy feel. When I put it against my Z1 its shorter but almost identical in width. The bezels arent as thin as the S4, also I don't feel nearly as confident in it's waterproofing either. I'm sure if you spill something on it that's fine but I would be taking it in the shower either (not that I did that with my Z1....Ok maybe once I did lol) It does have a better build than my previous devices but honestly sony blows it away in that department for sure.The back is less prone to scratches since its not the glossy back of the S4 but I'm sure it will get scratched at some point.