Well as you mention it,
I took Andy's Grand Finale and copied it amp by amp to the Kemper so that I had to try out not more than just one amp at a time. He took a lot of time to produce the stuff, I honour this much liked effort by taking time to know what he did. This is obviously true for all the good people (well, you know) selling rigs or giving them away for free. After a while you'll know who to trust so you need not ploughing through the lot (rig exchange). For me the crucial rigs are always the ones marked as CLEAR, CLEAR +, PUSHED or the like. Heavily gained rigs I normally don't take into account (can't here much sonic difference and also there are so many on offer...). If any, I select 5 rigs of an amp to "arm" one performance. This performance I seriously do test (active studio monitors) and compare them with similar amps. Then, they stay or they are binned.
Some of Andy's Grand Finale Rigs I didn't try because I'm not interested in metal gain sounds.
The last rig collection I checked have been Andy's (excellent) Grand Finale, M. Britts (excellent) Marshal 69, M. Britt (even more excellent Tweedy Pack) Twin, Fender Pro and ProJunior rigs. Last but not least I made four new performances of the (free) forgotten amps collection (M. Pausio) - really good stuff in there (e.g. Dynacord Twen Combo - sonic heaven!). If you compare Andy's Vibrolux 63, Soundside's Fender 57 or Bassman 59, M. Britts Fender 56 Pro and Dynacords Twen Combo you'll find excellent but not too similar clean sounds wich distort very musically if treated with a booster or the good old green scream (thats's what Paults was suggesting if I read him right). And for the more gainy sounds there's always M. Britts 56 Twin Reverb (something to play and dream).
So, not too many rigs "survive" this procedure and equally so I know where to look for rigs for the music at hands.
For me a certain amount of volume is absolutely necessary to hear what a rig is all about. If you play with not much volume they will invariably sound flat.
I hope that kind of answers your question.
Joachim