don't get me wrong, i'm all for mc's in some respects, i've got nothing against them. they can definatly make a set sound lively. but i genereally find the type of mc's i enjoy are ones that let the music ride, and aren't rhyming over 99% of the track.... sp, gq, dyna, system....
i think it's different if it's a radio set, think mc's should probably go for it and have it, as it gives the people something to pay attention to. so by all means, doin stop chattin.
studio sets.... i think a bit of both is needed. some 32 bar spits, some backing off. let it breath, show us what you go, but don't go over the top.
live, i think it's similar to studio sets, with a bit of added crowd hype, and generally bigging up the dj for what he's doing right there and then.
because with out the dj, it'd just be some bloke on a mic. and that's not a good look.