As it has 4x4 buttons and its all ready to go. I wanted 1x16, but heck, 4x4 will do just the same, and it will look great too once the software is running and things are "moving". ;-) :ugeek:
None come to mind currently except for digi-key, although they are more for components. Sparkfun is great: high quality, and great customer service. Great user base too.