I'm also using an Mvave Chocolate plus, I thought it was fantastic for the price and quality, I use it as 4 buttons (play, stop) (next song) (previous song) (change View) but pressing two together I can change banks and each one has 4 more options that for now I don't use but I found it very complete, the configuration is as simple as choosing in ST4 the function to press learn and press the chosen button and that's it, I became a fan of Mvave lol, I have a Tank G for guitar effect and wireless transmitters, so far everything is just joy.