beyonce's bloody awful in my opinion. so clinical (whereas kelly has a gorgeous, human vocal delivery, for example). and god knows how she's got a reputation as being super-sexy - the crazy in love video was ont he other day and there's something very awkward about her dancing. Again, so bloody clinical....
true, there is a difference between an imperfect voice and a weak one. But some of my favourite singers in rock (Dean Wareham, Ian Brown, no doubt some more) have technically shite voices, so i'm personally not averse to that. And i think The Dream is technically better than either of them (obviously so, in fact).
Interesting to mull why a deviation from brilliant technicality doesn't seem to be tolerated (or rather, marketable) outside certain types of music.