I like the sound of MBritt profiles the best for live use. I also really dig his approach to dialing in amp sounds. However, I like the profiling approach and focus on vintage Marshalls that Top Jimi does in terms of taking one amp and shooting profiles through the whole range of clean to mean. They just don't sound as big in direct comparison. Based on how I'm approaching gigging with this device now, I'm just going to use one amp in a night and go clean to various levels of mean with two lead slots (EQ focus). With MBritt, I actually prefer his 4x12 GB IRs more than the darker/smoother 2x12 CL80 IRs. Probably my favorite set of profiles is his 69 50W Marshall w/ the 4x12 GB as the cab. In trying the Top Jimi 68 and 74 Marshall profiles with the MBritt 69 Marshall 4x12 GB IRs (which come from studio profiles) in place of the stock Top Jimi cabs, it sill doesn't sound as thick as the unaltered 69 Marshall. I didn't expect it would because of the whole magic of the single studio profile. I'm just trying to avoid field testing time if someone has already given this a shot in the heat of battle. It's one thing to evaluate the sound sitting there at home. It's another thing to evaluate the sound in a gig with multiple guitar players.
I think what I REALLY need for Michael to reshoot that 1970 Marshall 100W Super Lead using his 4x12 GB cab like he did the 69 50W Marshall. I'd buy that pack in a heartbeat!