I remember this robot, it started as a kickstarter project early last year, and before Sparki they had Hexy which I believe was one of the few early robotic kickstarter projects. Arcbotics definitely owes quite a bit to the kickstarter community which helped launch them in a big way.

I remember them having issues at first as they were new to robotics and used the hextronics HXT900 9g servos for their hexapod legs. Unfortunately (as a few of us on the EZ-Robot forums also found) those servos just weren't cutout to lift that kind of weight. I believe they have it all figured out now and they are doing well for themselves.

As a company EZ-Robot pretty much grew up at the same time as Arcbotics, actually I believe they've had their robots on the market longer than we have and although they have some similar ideals when it comes to education, we definitely both went down our own distinct paths to reach our end goals.