I have had one for about a month and it is literally one of the best Electronic devices I'VE EVER OWNED.
FAST...Very Fast!! Quad core Exynos CPU @1.6Ghz. My Galaxy S II was Fast with the Dual core version @1.2ghz. That and an overclocked Mali-400 GPU with 2Gb of shared Ram... Yes Please!
I pair mine with a class 10 Sandisk 64Gb Micro-SD card.
Beautiful, Gorgeous 5.55 Super AMOLED+ HD (non-pentile; ie, each pixel gets it's own set of sub pixels; red, green and blue) Display for Web, Pictures, Anything, is Phenomenal.
S-Pen adds a Lot of unique functionality to the device. It's almost like having a mouse at times; which can be very useful.
HUGE Battery!! This thing gets used more than any device I've ever owned; I love it. I keep the brightness UP and use it at full blast ALL DAY (I'm talking about 7:30am until about 1am or later if I go out; and it's comes thru like a champion with juice to spare.
That's just a few of the things I love about it. More would be the Jelly Bean 4.1.1 OS and the TochWiz is light (not that This device would care), looks good and is actually useful. The default- keyboard does Swype, voice recognition and "normal" input with aplomb and it's BASICALLY JUST A REALLY CLOSE TO PERFECT DEVICE; For me anyway.
Etc. etc. etc. etc. etc... just buy it
FYI, I like the GN4 and the Optimus G and the Droid DNA too, but not expandable mem...?? wtf?? Plus not s-pen if I want it; which I do..