I had an original Galaxy S. It was so bad, I swore I would never buy another piece of Samsung electronics again.
Well, this time around, the only phone AT&T offered that met what I wanted was the Note 4, so I took a chance, with a heavy heart and much misgiving. I have to say, almost 4 months in, and I love this phone. Most of the stock apps are good enough that I'm using them rather than taking the chance on play store garbage. (Very unusual for me, I usually end up modding the hell out of my android phones) The Gear VR came in for Xmas,and is a great toy. I put in a 128Gb SD card and I have way more room than I need, even with a half dozen 3D full length movies on board. There is no lag or slow down on any of the games I have downloaded, and the screen is beautiful. WiFi and Bluetooth so far work flawlessly and fast. So far, all of the things that have frustrated me have turned out to be KitKat issues, not anything that Samsung has done.
It's large, but I never wish it was any smaller, only that my hands were a bit bigger. It's still small enough to be pocketable, even inside an otterbox, and I never hold it up to my ear when I'm actually on a call (less than 5% of the time I'm using it anyway). With bluetooth in the car, as a headset, and speakerphone on my desk, I rarely have to take it out of my pocket or the car/desk holder to talk.
It is good enough, that it just may entice me into getting Samsung when I get my 70" UHD TV later this year.