Buying a sports car is an emotional purchase rather than just a rational one like buying a Sentra or something good on gas. So it only makes sense to buy the car that really speaks to you, and if that is a 40th, stick to them. I personally get hung up on the cosmetic issues that are inherent on almost all used cars as rack up miles. So I suspect most 70k mile cars will have lots of cosmetic issues that would really bug me. I would much rather spend the extra few thousand and get a nicer, lower mileage example.
Oh, we won't hold the Bear thing against you here. Gig'em