The Prodigy and The Chuck are alike in the following ways:
*Both take protected
batteries for increased safety
*Both are metal construction
*Both have similar button placement
*Both are cylindrical and about the same size
*Both have a convenient overfill reservoir at the atomizer connector
*Both have countersunk atomizer threads to protect them from damage
*Both have a threaded battery cap and are loaded with batteries from the bottom.
*Both can use 3.7V or two 3V batteries.
They differ in the following ways:
*The Prodigy is aluminum and lighter. The Chuck is copper and brass, and heavier.
*The Prodigy has a resistor option for 5 volts (Which is very nice)
*The Chuck can be ordered in just about any color you want, with a custom graphic.
*The Prodigy is offered as a kit complete with batteries, charger and a starter atomizer for 140 bucks, as well as a base kit with no batteries, charger, or atomizer for 95.
*The Chuck sells for 80 shipped to your door (with no accessories).
*The Chuck is slightly longer than the Prodigy
I don't think I've missed anything. Either way, both are an outstanding value and you can't really go wrong with either. Essentially, it's a question of whether you want something highly customizable from a looks standpoint, or you want the desirable voltage drop.
Hope this helps
EDIT: Advantages
*Much longer battery life
*Much closer to the actual analog experience with higher voltage
*ENORMOUS battery life with lower voltage and one big battery
*Much more durable than a standard e-cig
*Cheaper to replace batteries that are fairly easy to obtain
*Pride in owning something this cool
*You won't lose it in a purse or backpack.