Bought the spark Control X along with a positive grid spark 2 amp. The footswitch seems very sturdy and well built. Wireless so no more annoying cables spread across the floor. Found it easy to connect to the positive grid spark 2, and no latency when selecting effects. So light and easy to move yet solid when on the floor and does not slide when you press a switch with your foot. I have my footswitch set on Profile 2 at the moment and have not had to change it, but you can easily select any of 8 different footswitch profiles and you can customize it to suit your needs. Also has 2 inputs on the back for expression pedals, but i have not used these yet.
All in all i am very happy with it and it does everything that i need. Great.