Being a brand new Kemper owner, I wanted to try a baseline of commercial packs and these were obviously the first call choice for a lot of folks. The 33% didn't hurt, either (thanks, Michael).
I got the 800, Vintage, Tweedy and Crank n Go. Wow. For the kind of classic rock things I do, every single patch was right in the pocket. As I've mentioned elsewhere, dialing in tones has never been my strength, so the ability to pull one up that's already been carefully crafted is worth the price of admission alone.
I've spent the week selling all my amps. I had a little EVH III LBX that I was holding on to, just in case. After hearing Crank n Go, it's headed for Craigslist / Reverb as well. One of the cool things about all this is the chance to hear amps I've never actually plugged into before. I have to second dmatthews on the Friedmans. For all shades of crunchy rock stuff this thing sounds amazing and was the area I kept coming back to.
Of course, that's a bit of a problem as well.
What I'm trying to do is finish configuring the studio setup with the K, Rig Manager, Toast Me, routing, profile organization, foot pedals, etc. so that it's all nice and tidy and I can just play guitar. But every time I go to test something and select one of these pack profiles, I end up screwing around on guitar for half an hour before I remember my initial objectives.
I haven't been this inspired by guitar tones in ages. And I've been at it since 72.