I used the note 2 for almost a year, the first time you get the note 3 and turn it on you'd go WOW. The screen is just that much sharper, especially on such a huge screen. It's so much snappier, although you won't notice it in whatsapp and fb for some reason  Camera is much improved, especially at night, the thing actually focuses properly, as compared to the note 2 which just keeps searching for AF lock. Battery however.. after 2 days, I find that the note 3 is more power hungry than the note 2 This could be cause I had a custom rom on the note 2 though, I was getting 6/7 hours of screen on time every day, with 18 hours of it being on. With the note 3 I'm only getting 4/5 hours  HOWEVER, this is still my third day with the phone, and maybe it's cause I use the camera a lot throughout the day, and now I tend to watch youtube videos cause of the LTE. So there you have it, a simple comparison