Right now I´m just going to use what the general consensum thinks sounds good at stage volumes. And that is MBritt profiles.
Of course it is true that with my headphones at regular volime his profiles sound way too bassy. And it improves if I increase the volume to the point of getting tinitus for some minutes after I stop playing. Of course I don´t do that all the time.
Playing with my cab the sound is different, of course, but still very good if I crank the volume.
I have not stepped on a stage since more than 10 years ago. And back then I just used my red JCM 800 miked and a bunch of pedals. But I got a bit tired of the same basic sound. That was the main reason to buy a kemper. Try other "amps" without having to really buy them.
What I mean by that is that probably in a couple of years using the kemper live I will have my own opinion/method, but now is just guessing or using other people´s opinions.
Anyway... at least I have a couple of months before I have to really worry about that because we are not going to play live soon.