I've had a pair of 8x42's for a while now and the glass is superb, the eye pieces on mine were faulty from new and had to be returned to Zeiss, they wouldn't adjust out far enough, the eyepiece cover is fiddly and the rubber lense cover keeps falling out, something I think Zeiss should address, as well as providing good quality flip up lense covers for they're scopes.
Cheers
MarkC