Benefit of power wire?

I'm just curious what the main difference is between power wire from a place like Stinger, as opposed to the power wire you can buy from Home Depot or the like?

Other than the look of the wire (stinger has clear casing's in various colors and whatnot), what is the real difference in the two besides the price?

I have three amps, six tower lights, heater, etc - the amps already have 0 and 4 gauge stinger power wire running to them; so I just wanted to know if I really need to spend the extra to get the Stinger wire over the HD wire to wire my other components.

Any help would be appreciated.
Thanks much.