ableton seems to be the best option for ya pete ;)
playin off tractor etc isnt really any more live than a dj set...if people are payin to see a 'live pa' they deserve to have a live pa...
the other side of it i suppose is most punters dont know the diference so why bother?...but you got your own self respect to consider...
mistakes are what makes it live..(or part of it anyway!)
in my experience ya get maximum respect from people when things go a little bit wrong ...then ya get it sorted ...n everyones with ya :clap: coz they can relate..and they KNOW its live then!
one last point..
when doin it live you can actually respond to the crowd better and judge the changes and subtleties of the set according to the vibe and reaction at the time..