[TowerTalk] Ground planewire. Insulated or uninsulated?

[Kirk]

This has probably been discussed many times but after a quick search of
the archives I'm not finding a definitive answer.
 
I have 1000 feet of insulated #12 that I am planning to install as a
radial system for a planned top band inverted L.  I have several ground
rods that will be places in each radial path (one or two each radial).
My question; what am I giving up using insulated radial wire vs
un-insinuated?  
 
Appreciate your responses.
 
Kirk, K6KAR
Niceville, FL