1) I don't use any of the Kemper presets, actually I deleted the most.
2) 99% of the user-profiles don't work for me.
3) I mainly use Armin's profiles and my own.
If you have a great variety of different profiles you always will find the right ones for you. Thats why I like Armin's detailed profile-collection and why they don't "frighten me to death".
I prefer Vintage and custom-shop guitars, I don't like active pick-ups and I hate EMGs. I always will prefer an old Plexi, Fender or Vox to a boutique-amp with a 1000 knobs or a high-gain amp. I prefer the "pure" amp-tone, I don't use a lot of effects and I like high-quality cables like Spectraflex. That's my taste and that's why a lot of the profiles on the market won't work for me. It's very ease to find a "death-metal"-profile, but until know I didn't hear any Marshall-profile with the quality and variety of this 1959-Plexi.
To the price-discussion: if you want the best quality (I'm a professional guitarist and I'm earning money with my Kemper), you maybe have to spend a little bit more and you don't get it for free, too. I'm also tired of installing hundreds of crap profiles, Armin's profiles are so detailed and well done, they are worth every cent.
P.S.: I'm not one of Armin's relatives and I found soundside.de on Google.