If anyone still uses a Kemper, Matt Fig has a 50% off sale going on for the next couple days with "Summer25" as the code. These are the best profiles I've found yet, they're way more open and lively than the Michael Britt stuff and he's shooting a lot of amps with liquid profiling. Sonically they are up there with the best tones I've gotten from
I've got several of the packs now. The Friedman Plex is absolutely killer, although my favorite profile is also in his $1 pack. The BE-100 v2 is pretty solid, Dirty Shirley is just OK for some reason. Picked up the Shiva, AC30, and JCM800 today. The Shiva is fine, but every clean profile I try clips for some reason (not just his profiles). I need to figure that out. The AC30 sounds pretty good. But the JCM800 is absolute gold, it's just everything you want an 800 to be. Especially when you tinker with the bright cap and clean comp setting. If you keep the bright cap on full you get that icepick tear your head off bright sound when turning down, but you dial that back and it's great. Clean comp you have to take it down otherwise the volume increases when you turn the gain down.
Previously I found the Plex to do everything from AC/DC up to high gain modern Marshall, but I couldn't get it to clean up super well. The JCM800 goes from sparkly clean up to 80's rock and like an 800 you may want to not max the amp gain (sounds kind of flubby) but throw a boost pedal on instead to tighten it up and boost it to higher gain. And with the liquid profiles you just have one profile that you can adjust the gain and EQ knobs much more like a modeler.