I bought this to go with the Vox AV60, it is perfect. The amp has a simple design, 2 channels(controlled by the first switch which has a LED). The other buttons control the effects from the amp(Chorus, Delay, tap tempo and Reverb respectively).
The construction is solid (a little bit on the heavy side) but it means it won't disintegrate after you step on it a few times. The buttons are wide enough apart so your foot won't step on more than one at the same time (The actual unit is bigger than what I thought).
The cable is long enough so you don't have to stand right next to the amp. The only thing it could be better is if each button had it's own LED, so you know which effect is on without having to play, or look on the amp(Not enough to lower the 5* rating)
As I personally use a Line 6 M13, I might buy the 2 button version, to use less space(as I'm mainly using to select the channel, not effects), however I would keep this in case I wanted a simple rig(without anything else)