PLEASE NOTE:   (1) This reviewer rates headphones relative to the price paid. 5 stars at £1000, in other words, will not be directly comparable with 5/5 at £100. Unless, that is, it's specifically stated to the contrary, my ratings are given strictly relative to other headphones in the item's approximately comparable price range, only.    (2) *AN IMPORTANT CAVEAT ON HEAD SIZE* Firstly, do not even consider buying these if your head size (or hat size) is anywhere less than 'Large'. Please take that as fair warning. Seriously, *if* your head is...