I am currently working with Therabee and Theragrip hand gyros, neither of which can come close to the speed of a Powerball. I have easily maxed out both balls, and the rotors are starting to crack from my excessive speed... I only say that because the balls have never been dropped, and I inspected the one before and after my spin and found hairline cracks all around it afterwards. I am hooked on these things, and I want to get the best workout I can for the money. The Techno seems cool because of the unique score displaying system, but is any particular Powerball better than another (besides the Metal??) What are the big differences between the 250Hz Pro, Neon Pro, and Techno other than the lights and score reading method? If there is no benefit to having the lighted models, then I might as well go with the standard 250Hz Pro because I just love the workout and don't care about other people seeing me do it.

I may just buy 2 right away, but I want to make sure I am buying the right one. If it matters, I'm about 6'1" tall and 220lbs. I'm overweight, but my arms have always been my strong point... I'd like to get them to be much stronger...