I have to agree, I was blown away by Bono's voice on Stay and Two Shots... simply sublime. Would you even have imagined during the Popmart and (parts of) the Elevation tours that his voice could sound this good again.
And as well, as I was watching Stay I had a weird sort of vision of Bono and Edge in 15-20 years time, playing an intimate show somewhere; older, greyer, possibly fatter!, but still having that incredible magic between them that is present here. I really do think that Bono will have an amazing 'later life' in this kind of crooning on a smaller stage once U2 have called it quits.