wow... I should've come here first... I just got an SMS Classic and am trying to find a good power amp as well. I had narrowed it down to these exact same 2, and was doing a general search that led me to this thread. I was leaning toward the Velocity 100, but I can't seem to come to a conclusion.. I am only running into a 1x12 (for now) so I'm assuming that it'll have enough power.. I am FAR from a "gearhead" and trust just about anyone else's opinion on such matters. Is the Velocity 300 a better choice? (Especially if i eventually add another speaker?) any other opinions? I REALLY WANNA GET THIS RIG GOIN>>> you guys rock. thanks