[twin plugged targa]

I had an 86 Carrera Cab as my 1st Porsche and sank money into it as I auto crossed also, in S. FL. I wore her out and she became unreliable and expensive to 'race'.
I test drove the S 2000 , at the same time, when it 1st came out and was disappointed in the plastic interior and lack of torque, which made if 'feel' slower!.
It did not have the smell, classic feel and character that a 911 has.
So it can never replace a 911 (IMHO)
If cost is an issue, hang on to the 911 - as they are unlikely to drop in value (or fun) and drive the S2000 as a cheap sporty runabout.

The Targa - really looks 'sorted' and you WILL regret selling her.
I have regretted selling all of my Porsches, but have made money on all but the 1st one, as only kept her a couple of years (whilst I upgraded her for the next lucky owner!)

Just my 2 cents (or 2 Euros now!)
cheers
Ben