Agree. The Vent, to me, sounds like a mic'd leslie where the internal sim sounds more like an in-room leslie. I can definitely see where the internal sim would sound more like a 251 than the Vent. I have a BURN and an original Vent but 90+% of the time I use the internal sim, the Vent is a little better (specifically the horn having more definition in fast speed) but the only one who notices it is me, no musician nor anyone in the audience knows the difference.