I hate to criticise other DJ's and live acts but I have to agree with the general consensus of this thread...
Saw Nero 'live' as well, both of them were there but it was just one of them mixing on CDJ's, not even decent mixing either, really rough transitions and their set fell apart in the middle when they started playing other producers tunes, with completely confused the crowd.
Did anybody see their 'dubstep orchestra' thing on the BBC? Was terrible, actually shockingly bad. They seemed to be standing at the back behind the orchestra fiddling around with ableton not doing too much. The piece of music they wrote wasn't doing too much either, didn't really go anywhere like a piece of music should, I kinda felt sorry for the orchestra.
Sorry, rant over!
