[in_a_hole]

You may have already heard this but Bitwig runs on Linux and has an Ableton-like workflow, as well as a richer effects system, I'm told.

[vunderba]

Bitwig user here - it's developed by former Ableton developers and the sandboxing system they use for plug-ins makes it rock-solid. Even when a plug-in does crash (which is rare) - it doesn't take the entire DAW with it.