Absolutely LOVE #darktable.
I finally made a brace of keyboard shortcuts for my left hand, which also combine with mouse gestures and scroll wheels.
I hardly ever have to take my eyes off the image. It feel like your brain is connected directly to the image.
Open source is often derided because it's written by programmers FOR programmers. Bollocks!
Put the time in = reap the benefits. Lightroom feels so inflexible and pre baked.
DT Developers, I salute you!