I’m wouldn’t make a judgement this quickly and also don’t base your opinions on the factory presets. I was also underwhelmed at first but after finding the right profiles for me (MBritt in my case), I am getting the best, most consistent tones of my life and I’ve had some nice amps.
Sorry, but i totally disagree with that sentence...
The first time i plugged my Stage in my DBR10 i was blown away with factory sounds and i played for hours... I had a Helix before and, FOR ME, i noticed immediatly the difference.
Factory presets (a lot of them) are made by profiles sellers. Of course, you won't love everyone but going through them you should find quickly one you like contrary to modelers....
IMO, if it's not the case whether, you don't have the rig you need (FRFR among other things) or the Kemper is not your cup of Tea (don't like mic'd sound)....