Paul Davis of the Ardour project. Ardour is probably one of the best digital audio workstations ever made. Sad thing is that Ardour is such niche software that it doesn't get as much monetary support as it should.
BTW since Harrison Consoles have a commercial version of it (MixBus/MixBus32C) and are actively contributing to Ardour, I wonder if they are also supporting it financially.
BTW I've switched from plain Ardour to MixBus a few months ago, and I'm not sure why but it produces much better results for me.
The better results are probably due to Harrison's EQ and console bus emulation.
EDIT: Not to downplay Audacity which is also awesome, it's just not meant for the same use case.