Nice comparison!
Some part of me still loves what the G12-T75 does for mixes. Hollows out the mids, and leaves a ton of room while making the guitars sound very mean and scooped.
DI files + backing track, for those who'd like to reamp:
https://dl.dropboxusercontent.com/u/970622/celestion%20comparison%20DI.zip
Both DI's are panned left, could you reupload them in mono?