The profiler remote i found to work far more fluently with the product than the Behringer solution, although at this price frankly it probably should. What i really found useful is the integration of the tuner so you can tune at your feet rather than returning to the device and the ability to use the looper effect which was a massive help in composition.
The Kemper controller is built like a tank and works without separate powering. Just connect it to the Kemper and it works. The guys at Kemper have been clever to go without an expression pedal, so this thing fits perfectly into a standard-rack. And you can add an expression pedal via cable connection if you really need one. The only bad thing about this one is the price. It’s a bit too expensive for what it really is: just a footswitch. On the other hand this is still the best solution for controlling the Kemper on stage.