Don't know what chose, but Ableton Live Intro will mislead you as to what Ableton Live 8 is capable of. Lots of features are stripped out. If you want to DJ, produce and make creative arrangement, Ableton is the most versatile.
If you just want to enjoy instruments or play live, Mainstage is great.
If you want to record and produce in a way that is similar to ProTools, Logic Pro will best fit that need.