I bought the sideswipe human alliance yesterday at $30, MISB. Well, playability wasn't great. The car mode in chevy corvette was awesome nice. But in robot mode, its sucks big time as maker trying to mimic the real sideswipe and end up un-usually big back pack and very small leg/wheels, totally off balance. Not so good entirely.
In fact, Human Alliance jazz on 24 July 2011 at CSC for $50. It was fantastic!!! Robot mode was cool, cool blue visor, cool bike (change into shield rocket) and details of the car and robot was awesomely brilliant! Well worthwhile the buy at $50.