Which Boxster S would be a better purchase in the long run?

[dghii]

I have both cars at my home right now....
00S with 117K miles, stock, 17" twists
03S with 103.5K miles, stock motor but PSS9 suspension and 18" Carrera lite wheels.

Both cars are 6speed.

I really cannot tell a difference, performance wise, between the two cars. The 00S has a smoother, less stiff ride of course, but other then that, nothing I can 'feel' in terms of acceleration or torque.