Covering metal used in the new IPhone six and six plus

I am now thinking of buying a new iPhone six but whenever I browse in the internet about the current affairs about the iPhone I always get disheartened, people are complaining about the outer metal covering the iPhone. Some even complain that it gets bend in a tight pocket or while sleeping on jeans! I am desperately thinking of buying a IPhone but the rumors of it around the globe prevents me from getting it. I am on a budget and I do not want my money to be greased for a very sensitive person!
I would like to know in detail about it.
