Iphone 5s is a awesome phone. I have purchased it 1 month back and its working very properly.
Pros:-
Less customization to bang your head with
Great earphones - Unique and comfortable design and a plus for bass lovers.
A decently loud ringtone and speaker volume.
Great front/back camera if you are not a megapixel freak. It really does not matter. Very clear photos in both night and day with desirable focus at the tap of camera screen, manual exposure adjustments and variety of in-built chrome filters.
Google account synced easily.
Fingerprint sensor makes it super easy to unlock screen in the hands of the authentic user
Cons:
Battery life could be better. 1 day of battery life with medium-light heavy usage.
Expensive accessories
Lot of apps have limited interoperability in terms of sharing data with other apps. Ex: From Facebook you cannot "Share External" to another app.
Default Mail Application does not open a mail if there is no internet connectivity and if you have never opened that mail’s content on the phone.
Apple iphone 5S is the best.