I recently got my PowerRack Kemper and I'm excited to begin using it. I play guitar in the Metal band Eternal Art and I'm looking forward of using the Kemper on coming gigs with the band. The reason why I ordered the Kemper was that I spent hours drawing sketches of the ultimate gear setup which both were compact, light and had the tone I had with my Engl Powerball and I realized that the Kemper solved all my problems. I also order the Profiler Remote which means I only need 1 cable from the Kemper to the pedal and still can manage effects and tune my guitar.
The best thing with the Kemper is that I believe I can find a good tone faster which mean more playing! I remember owning a multieffectpedal GT-10 but I spend more time tweaking settings instead of playing guitar.
I don't know about you but there are 3 features I think would be great for the Kemper: Rig Manager which could edit presets, parallell Amps Left and Right and lastly it would be even more practical if the Profiler Remote were wireless.
Anyway, I'll use the Kemper at the gigs, studio and rehearsals!