If you don't have infinite stacks of money
laying around, I seriously recommend you look at the Sony Xperia Z1
The Z2 doesn't offer all that much more practicality than the Z1, and as I bought the Z1 just before the Z2 was released I don't regret my choice at all. It's super fast, has a great camera (essentially the same as the Z2 now that it has KitKat) and if I could choose a device again now, I'd still go for the Z1 over the Z2 for its pricetag.
Compared with the Xperia S, I even made a (surprisingly unpopular) video of it with annotations, where you can see the two devices side-by-side. If you want, you could check it out here:
I'd appreciate any extra view on that video anyway
Hey, you there.
. Are you aimlessly browsing the web in search of interestingnesses
Why not check my blog
for a minute :')
Main cameras: Nikon D5100
and Sony Xperia Z1