This is the best android phone ever and this is the first time an android phone beats iphone in literally all aspects
I mean android phones were always better in terms of specs. However due to optimizations in IOS, iphone was beating better in certain things like camera, build quality, overall software experience.
However Samsung has changed that. It has the most premium build (A little bit fragile though I have to admit) but when you put it in your hands it feels so luxurious.
They have put a lot of heart in the camera and for the first time a phone has a better camera than Iphone. There are so many features like slow motion video recording, wide selfies, virtual shots, selective focus and many more. Low light photography is amazing and it takes less than a second to open camera app and click photos.
I was wondering how I am going to cope with TouchWiz when I am so used to of Stock Android on my Nexus 4. However they have cleaned it a lot. An the theme engine gives you such beautiful accessories to decorate your screen, you would forget about stock android (Although I have kept the Google Now launcher as default to have default voice search on home page and cards flashing from Google now).
Super Fast processing, Wireless & fast charging are awesome. Sound quality is tremendous.
Most appealing feature is the screen and the edges on the screen. It feels so premium, I have not seen a thing like this before. Its crystal clear and everything looks beautiful. Edges, even though are not very helpful as they offer only couple of features like night clock and edge contacts, look stunning and give a very unique feel to the device which you are not going to get elsewhere.
Only concern is the battery backup which is not great. On busy days you might have to charge your phone twice. There are a few workaround though like keeping brightness to pleasing level, installing greenify to hibernate apps, not syncing everything from your secondary gmail accounts and disabling useless apps like OneNote and Galaxy Apps. This gives around 1.5 days on single charge.
Note - I am not a Samsung fan but I am a Android guy. I have been waiting for the right hardware which complements extraordinary android. I was not so sure about Samsung because previously they have released a lot of crap. However I did my research and this is the real android phone which I was looking for all along. If this phone was released by HTC or as Nexus, I would have bought it next day of launch. But with Samsung I waited to make sure I am investing money in a thing that I really want. This is a real gem and no matter what Samsung has done previously, they should be appreciated for their effort this time. No brand biasness