Wyred 4 Sound STP-SE Parts Connection vs. Factory Level II Mods

Underwood Wally initially offered Level I and Level II mods to the STP-SE preamp, designed and performed by Chris Johnson at the Parts Connection.  Wyred 4 Sound subsequently offered their own Level I and Level II mods.  Looking at the description of these modifications they are almost totally different.  Has anyone had a chance to compare STP-SE preamps with these different modifications?