Has anybody recently upgraded from a 6 to a 6s and noticed a difference in audio quality when listening to music? I had a 5s,upgraded to a 6 and all was well until the screen started clicking. I took the 6 back to Verizon where I bought it and all they had were 6s's. So I said what the heck and got that. So I get home restore back up and it seems like the 6s has weaker base than the six and muted midranges. Anyone notice any differences or is this all in my head. It's almost to the point I want to exchange the 6s for a 6 but my local store still does not have any. Comments?