I had a feeling it's something like (Stiffest to Softest): R27 > Cup > 197 > 200
But I could be wrong.
197 with a map is *close* to a 200 in terms of driveability and low-down torque (Andrew was amazed by the lack of flat-spot in Patty).
Why not buy Andrew some beers and borrow his cars for an afternoon?
If it's registered in his name, it's an even better purchase. That will save on insurance.
Plus he'll be able to say "no, Adam, I'm using the car today".