That might be the version I hold on to (or if they make the Legends Leo Prime; just great colors).
I don't know why I can't seem to get into Thundertron as a toy. The character concept is cool enough, and this new mold seems to be an improvement in key ways from the original. I think there's just something about the color scheme that leaves me meh on it (which is why I was glad to skip the regular release and waiting to see what this would look like). That, and I'm still kind of weary of seeing it after PRID merch seemed to hang around on shelves here forever at the time (and it was mostly Thundertron).
Like give me this mold in mostly muted maroon or dark navy blue, to better sell the "pirate captain coat" look in robot mode. Maybe with charcoal as a secondary color and gold for accents.