Just re-introducing myself.
I have been using Kempers since 2017 but never much interacted with this forum, so I am still classed as 'Beginner' (you'll usually find me on the Facebook pages). I am semi-pro, and play in a covers band in South East England. I have a modest home studio and use Kempers live, for the following reasons: I finally have complete control over volumes, it saves me carrying heavy gear around, but most importantly, it sounds amazing. Generally playing small venues, I always struggled to get the same sound each time, whether it was using Marshalls (I have owned a few) or Mesa Boogies (I still own one). I also always struggled to keep rhythm quiet while boosting leads to a reasonable cut-through volume and EQ. All of that is so easy now.
Although I own hundreds if not thousands of profiles, but I use a variety of Performances which are mostly based around BE100 rigs created by Bert Meulendijk. I have other experimental performances based on other amps and profile producers.
I mainly use a Kemper Powerhead, but since I sold my Helix LT (which was my backup solution, with an FRFR cab) for a Kemper Stage, I also bought a Powerkab, which I can now use with both units. I still own a Matrix NL212 cabinet. Even though I mainly play pubs and clubs, I will put the Kemper also through the PA in stereo, and use the Powerkab for monitoring.
Although I am not a pro, I have been playing since 1975, and the Kempers are hands-down the best guitar gear I've ever owned.