I would say turbo...Friend has one and he is in love with it and it is very reliable. That would be the only porsche you should consider IMO. Only thing that would bug me with this car, is that the new 911s will be out by then. And that the turbo isn't as sporty as the GTR IMO, but it is more luxurious.
I hope you choose the right choice, and I hope to see some pictures of that choice when you make up your mind
