Ah, damn. I'm not a fan of those personally. I like the non-Marshall ones. The Marshall Vintage is not actually a V30, but a V30-like speaker. It sounds like a cross between a V30 and T75 to my ears, but the old ones are much smoother. In recent years, Celestion has actually begun stating that it's not a true V30 , and Marshall too, pointing out that it's a different speaker.
But, I will get your cab pack, since I love all your other packs and I have faith in that the ones you have might actually change my mind regarding these