I think that the (x2 z') variant of this method is very interesting as well, since it only requires one simul move (per face)
Memo U to C on back
x2 z'
Memo U to C on front
UL up, Match C to R
UR up, Match C to D
R up, Match U to L
(UL) up, Match U+L to 12
Simul: Perform memo'd move for...