I like the RAT as well... but I don't have the turbo. I always thought it was a great stomp box, nice n' smooth distortion if you want it and raunchy if you need it.
Works well with my Fender DSP amp but doesn't do as well with the Marshall TSL 100 4x12 combo. I guess I'm already looking for a certain sound with the Marshall anyway.
I hooked it up to my fiddle one time and got some cool sounds out of it but very hard to control the feedback. Maybe I needed a noise suppressor or something. (Probably an electric fiddle not a violin with an acoustic pick-up would exponentially help out the situation)

Other stomp favorites:
Boss-Metal Zone (Maybe not your particular brand of bourbon but you can dial this one in)
Big Muff Pi
****and Yes the Ibanez-Tube Screemer****

Later, Nate