I have not driven a Porsche with PDK. However, if it is anything similar to the Volkswagen DSG/Audi S-tronic double-clutch gearboxes, then it would have been highly considered.
I used to own a 2007 Volkswagen GTI with DSG, and I loved driving it. The shifts were crisp, quick, and still kept me engaged. Thetransmission services every 40k miles weren't a huge drawback. Sometimes I felt I should have went with the manual, but no regrets.
That said, if PDK was optional during the 986 run, I may have searched for one. I still enjoy my manual, though.
