G'day,
don't know the current range offered by Jincheng (Panda) in the USA but would personally stay away from the Chrome edition (the all chrome & silver paint model). the chrome version does not look very nice due to silver frame/swingarm and the chrome quality is not that great in some corners (copper shinning through).
as well, highly recommend getting the Hydraulic Front Fork version with disc-brake and 4-speed manual clutch.
engine versions availabe: 50cc, 70cc, 90cc, 110cc (might not all be available in USA through Panda / Jincheng).