I've had a few & presently contemplating another EDGE stock for a LW hunting rifle.
If you're truly counting ounces, then EDGE fill will shave a few off a standard fill stock.
Have never run into an instance where an EDGE fill stock was compromised or otherwise damaged from field use.
One caveat for opting for EDGE fill is that the molded in 'swirly' patterns that McM is famous for are not an option. Stuck with painted finish, or dipped in some rare instances on "in stock" products...