I've been using Bitwig for about 2 years, though I didn't get much done since then. Bitwig has been pretty good so far, the workflow definitely feels better for electronic music than Ardour. I mostly do deep dubstep, but I'm playing around with all kinds of other (electronic) styles.
something I did with Bitwig last year: https://soundcloud.com/alphawand/solid-wip
I dig "Ohyeah3", good vibe and that's some pretty neat guitar playing.