From what I understand, you get the same amp in the same revision of 2 channel Rec. For example, a Rev G Racktifier has the same components as a Rev G Dual Rec Head. Granted some say the Racktifiers sound tighter or whatever but I am sure that in relation to a Dual Rec of the same circuit revision it is the same. If it is a Rev F or a Rev G then certainly it would sound better than a 3 channel Dual Rec because 2 ch versions if the Dual Rec just sound better in general. In fact, 2 ch Dual Recs just plain make the 3 ch look silly. I don't think they had a Rev C or D Racktifier but if they did it would be the same as the head that matched the circuit revision. I can't see why a Racktifier would sound any different than a regular head. If the components are the same then it comes down to the old addage that some amps just sound better than others even if identical. I used to want a Racktifier pretty bad but I am happy with a standard head enclosure. Should I happen across a Racktifier that I want to buy I might just to have one but it isn't something I am GAS-ing for anymore. I would rather have a Rev C, D, and F first. I already have a G. From what I have seen, it appears that they take up 4 spaces.