Ableton and your computer?
Organizing your Ableton Projects?
Ableton and Midi Controllers?
It depends on your workflow. The Push2 is a great controller for in the studio as well as performing on stage. If your workflow is more like a traditional DJ where you would need a crossfader (the Push2 can work as a crossfader) BUT you want to “crab”, the APC40MK2 is a solid option.