First and foremost, I despise the 996's interior. That generation itself is at the bottom of many Porsche aficionado's lists.
The turbo in my opinion is the poser 911. What with the heavy curb weight, four wheel drive, and turbos.
Not to mention, the service costs associated with Porsche ownership.
In this case I would spring for an E92 M3. But if you don't need backseats and want a pure driving experience go for the Cayman S. I've advised people stuck between the M Coupe and Cayman S to take a look at very lightly used Cayman S's.