I'm moving over to CDJ's really quickly now, got a gig on Friday and it will be the first time I use CDJ's for a live performance, but I'm really looking forward to it purely because it's so much more fun than laptops.
Yeah I'm an Ableton person, but I can use Pro Tools now (more of an editing piece of kit) and soon Logic too. Ableton is fantastic when you know what it can do. Me and Rob only use 2, maybe 3, external VST plug-ins for our tracks and the rest is all Ableton provided. Our basslines are done using Operator which you will find on there, but we use the other plug-ins to recreate our orchestra breakdowns. So when you listen to our stuff and ignore the orchestra sounds ... thats what Ableton can do for you!