Yeah the "glass back = premium and you will pay more for it" is sort of hilarious when you consider glass is more or less a free material (in its raw state).Oddly just gone back to the 5 myself, I like the 6 but really into running and these days and find the light weight 5 and size suits me.
Hoping the 6a will be be of similar size to the 5
Why do we ever need a phone with a glass back ? Adds weight and another thing to break!
The 5 is so light with the resin / recycled plastic combo.
I get glass gives a premium feel, but 90% of people stick it in a case anyway