there was a fairly interesting article on mylo and how he uses reason:

http://www.computermusic.co.uk/pdf/interviews/mylo.pdf

liam from the the prodigy is also often cited as a 'famous' user.

the vast majority of professional reason producers still rewire into a main sequencer, pro tools, logic etc.. indicating they are not 100% happy with the reason sound.

does anyone know of any 'known' producers who use purely 100% reason for the final mixdown?