The Analog Man Boss BD-2/Super Mod Pedal does not have the midrange vocal quality that a tube screamer has - which is a good thing to some people. The sound is less "effected" - more transparent than a tube screamer overdrive pedal. The BD-2 overdrive pedal does not have the low-end loss that a tube screamer has so it stays nice and thick on the lows without getting flabby.
