I have been a tube a phile for many years, and I am a dealer for Dehavilland, Antique Sound Labs, Manley, Cayin, Cary and many others.
With that said, my main reference amplifier is an Edge NL 12.1 and when that amplifier is properly setup, yes I do use a tube preamp, a Cary, the Edge blows away any of the tube amplifiers and is both engaging and has an enourmous soundstage. I have over the years sold and listened to all the great solid state amplifiers out there, the Edge is truly amazing!