Isn't one of the main points of forums like this to relate personal experience from our point of view, which is necessarily different from the perspective of the next guy? There is no "right answer" (unless you're small minded) so by listening to as many opinions as possible a person can generally get a feel what might make the most sense in their space. Then, at some point, you just have to go buy one & try it for yourself.
For example, I agree that the C+ is amazing at home and records well. We're actually recording our album with one. I also agree that it doesn't sit well in the live mix, which is ultimately why I have sold them all. However I disagree about the DRG. For metal in my context I think triode is soft & weak, and it's my least favorite iteration. That said I recognize for some styles it may be better- just not mine. To add some perspective my band is a 3 piece, we play loud and I want a guitar tone with HUGE BALLS. The destroyer of worlds in my space is the IIB Coliseum. Tonally it's more akin to a MkIV in aggression and it's sent 12 or 14 IIC+ & III packing. Only one I've kept is the IIC++ Coliseum because it does record better.