I'm a heavy smartphone user and have owned the i4, 4S and presently the iPhone 5. I use my phone for calls, texts and I browse the web for hours daily. I charge my phone twice a day, it gets used to death. Now I think that I'm in a position to comment, having used iOS extensively since iOS5, that the latest incarnation of the o/s gives me nothing new other than a "fresh new look" and extra Safari tabs. I have gained no new features that I actually use, let alone need. However, my battery life has decreased by a third each charge cycle, I experience numerous call, app & Safari crashes and web browsing is clumsy. Safari doesn't remember where I was on a webpage when I hit the back key (it always frustratingly takes me to the top of the page) and websites with lots of picture content scroll slowly. Safari in iOS6 and before was a much more refined beast. Now whilst I don't mind the new look of iOS7, until it gives me the same user experience and battery life as iOS6 then I'm extremely disappointed with Apple. My phone is a much worsened device now it has iOS7 on it. Oh and of course I have done numerous clean installs etc. It just plain doesn't work very well on the iPhone 5 *in comparison to the same phone running iOS6*
If you take away the "fresh new look" and concentrate purely on useability, then you're kidding yourself if you say that iOS7 is better.