I don't know if thats the best place to get serious information about gear...
Besides that I'm really hyped up regarding the Kemper. I heard some clips that had issues like being to fuzzy, but the most ones really do sound like the real deal. And since I'm recording in a small appartment it's a non-brainer anyway.
if it makes anyone feel better Mark Lewis used one for guitars on the new Whitechapel Record. He profiled a 5153 into a mesa cab with a 57 and beyer 201. Sounds pretty good to my ears