Seems to be some misconceptions about the iPhone 5.
Mine arrived with Zero blemishes and still has zero blemishes. I can only speak for myself but my battery has been much better that any other iPhone I owned.
Today it was taken off the charger at 730am and its now 940 at night and I am still at 75%. I used it to navigate twice (did not get lost), some texts, some web browsing and a few calls. This was a lighter day than normal but in my opinion the battery life today was surprisingly good.
Camera works great. No purple haze or other weird phenomena.
You have to remember with Apple there's a lot of over hype both good and bad so take things with a pinch of salt.
I would highly recommend this phone.