I agree with funkymoney, go the FTO.
All these people that are recommending the Supra would be subconsciously thinking of the RZ model.
What would be good is if someone posted all the specs for both cars. As I recall, the MIVEC motor in the FTO puts out around 200hp at the motor, and I'm not sure how much more the SZ Supra puts out (if any).
Would certainly help clear up this mess.
That said, I've always been a fan of the FTO, so I'm biased...