You're ahead of the rest of us that are still waiting on the new EZ-B(4) and all the other robot goodies. The only source that may answer your question will have to come from the EZ-B engineers for now until the rest of us get our hands on the new hardware.

I think I remember Neik saying he got JD walking in one of his "ez-robot experience" videos. adding another joint may make JD unstable and harder to maneuver.

I am still waiting as well. I am typically patient but I am doing well when it comes to this lol.
I am obsessed with the NAO and how well it moves. I know there is no comparison between a $15,000 robot and all the other ones on the market but it gives me something to shoot for personality and movement wise.

Hi ings , the closest you could get to nao stability if not better would be ax -10 or ax 12 robot servos which are serial controlled and can be chained together making wiring so much easier. Dj has ordered one of the servos to see about making a control option for them in the software. Just think though. NAO has a ton of markup. It's a research machine but it is marketed like a toy which manages to get t a lot of attention. It still is just a frame full of servos tethered to a pc doing all the work. EZ Robot will quickly catch up to what nao does.

Hey guys,

Although we haven't actually tried it, I don't feel the addition of another joint would help JD all that much in terms of balance. He actually walks very well with his lower center of gravity. I was actually very surprised the first time I had to program JD to walk. It was much simpler than I ever imagined (the auto-position frames in ARC work extremely well) and I went from not really ever touching JD, or any Humanoid robot for that matter, to getting him to walk at a decent clip in a span of ~2hours. It was awesome!

P.S. Not to worry, Video of JD walking will be coming pretty soon

I also believe the NAO seems overpriced. And I am really looking forward to seeing what I can get JD to do.

@Technopro haha, I love it when people mention me I did in fact get JD walking... it just took me a couple of days. I was with DJ when he got JD walking, and it only took him 30 minutes

I've been working on my own humanoid for a while, (24 DOF, the most joints i've ever had on a humanoid) and it looks like if you wanted to have NAO stability/power, you'd have to have dynamixels,(like jstarne said) same as I have to. I've been using a old bioloid comprehensive CM-5 until my EZ-B v4 comes in to test stability and speed, and the servo performance seems exactly like the performance of a nao, only with 20 12a Dynamixel actuators (the kind that come with a bioloid premium) and 4 radioshack micro-servos instead of the NAO servos (whatever they use). Though you could probably customize JD into a impressive little humanoid using the Clip N' Play technology, using Dynamixels would help you to create a NAO-like humanoid in terms of performance the taller he becomes.