Hey dude, I think you've already seen the post on ss.org, but I'll copy it here in case anyone else is interested:
Let's start with a story:
The day I collected my Blackmachine, I went to Doug's house, he handed me the guitar, plugged me into a VH4 and... WHAM. The sound was unlike anything else. I had to have a VH4.
And so it went, I got the VH4, and while it sounds excellent, it was never quite like the sound I heard that day. I put it down to just being on a happy overload that day.
But I've had it niggling for a while. I've found there's been this icepicky high that has been difficult to dial out, and more recently at rehearsal, found that the lower mids were particularly muddy, and really made me flounder in the mix.
New cab fixes all of that. The highs are prominent but not harsh - I can run my treble wayy higher than before, get lovely clarity and punch, but without bleeding ears. The lower midrange is defined and clear. The whole package is just so much more musical. Also, cleans are just unreal.
Interestingly, up until yesterday, I assumed the front-loaded cab was for me. As much as I wanted to prefer it, I just couldn't get away from how much better the rear-loaded sounded with the VH4. Perhaps with a Herbert it's a different story. You know that if you go in with a pre-supposition, and get convinced the other way, that you've made the right choice.
Also, the Orange is not a bad cab. Far from it. With the right amp, it's beautiful and musical in all the right ways. The VH4 is not that amp in my opinion. I'm keeping the Orange for the future - I can see myself getting a Cornford or similar at some point, and I imagine the combination with the Orange will be far more favourable.