Have been trying Logic Pro out for the past two days and I am blown away. Don't know why I ever moved to Ableton. So much more intuitive.
Only thing I miss is how Live would let me launch scenes. If that could be implemented, I would never move back
@matigo - I have an iMac (although it is getting old 2008). I got this mainly for live performances for music. My music is a bit minimalist sounding so not that many tracks, otherwise would have gonna for rMBP and some better processing power