Well I've sent my iPhone 5 back.
I'm a little sad but in the end I think it was the right thing to do.
I would have thought that Apple would have learned its lessons from the farce with the the first gen iPhone 4 whereby holding it with the left hand would cause a loss of signal.
It was because your hand would short the GSM antenna with the wifi antenna and hence the loss of signal.
What gets me about that was that throughout the testing stage not once did this major issue show up?
I think that what is happening now is that Apple have become so big and popular that their die hard fans will always buy their products regardless and tout it as being the best thing ever.
The facts are that these glaring, in your face, issues are simply a lack of quality control from Apple and all the other companies that were involved in the new phones development.
Yes, it's a given that through the manufacturing process issues will always crop up. And it doesn't matter what company it is or the products they manufacture.
In this case though I think the biggest sign of negligence during the manufacturing process was the damage to the aluminium bezels and some parts of the casing.
This, to me, is a blatant disregard towards quality control and could have easily been rectified be simply pushing back the release date by a few weeks.
But in Apples hast they chose a very close release date which put lots of pressure on the manufacturers to get the product out.
I think that Apple have turned a blind eye on this and have chosen to rectify the situation through warranty returns/repairs.
And couple this with its success and you have a company that can afford to turn a blind eye.
So successful that don't have to care.
Anyway, look out for a revised version of the phone between December and January and a newer, faster version in 18 months.