It's always the Supersize Bulb cab first and then the Traditional cabinet plays the same exact loop through the same amp settings.
These are the IRs that I use the most out of these packs. Both are SM57-MD421 Alloy IRs that fit my criteria "best". Essentially these are the million dollar IRs for me personally.
So even though these are 4x12 "USA" cabs with V30s they sound completely different. I use Cab Pack 7 with the USA Lead amp sims since it has that "Cream Theatre sizzle" but other than that I'm mostly using USA Bulb at the moment. It seems to make everything sound smooth.
Opinions?