I picked up a cool murdered out version when this pedal was the flavor of the month. On one side you've got a modded Bluesbreaker clone, so it's perfect for that edge of breakup, low gain thing and doesn't color your amp's tone too much. On the other side you've got a Nobels ODR1 clone, which despite its green enclosure is pretty far removed from a tube screamer, definitely has its own vibe with that wacky contour knob. Neither side does the high gain thing, even when you stack them. I think its a great low gain drive, with convenient options for different flavors.