For me I had iPhones from 3G to 4S, and now the 5
Fast CPU, length is not as good as Samsung GS3 4.8" screen
Speaker is way worse, volume settings seem much lower than my 4S
Black is ok, White was nice too, but I think the black is sleek and well sexy however dropped down to a 16GB from all my others being 32gb, will just have to manage music better.
New charging jack is nice, but I am ok with the different cable, just need a car charger now, or another sync cable.
Black shows fingerprints more than the white ones in the Apple store did, but it is ok, screen cleaner will be used more often.
They moved some setting around in the iOS like brightness and wallpaper are tied together, the store is now built into iTunes, minor quirks to me
charges very slow
battery does not last long at all from my usage already, but LTE is really fast
Case selection really sucks, I had to get a cheap rubber case from Best Buy for $23 since they seem to be the only ones carrying cases?