I would be absolutely heartbroken to see ya go Evan

. But seriously though, I would hate to see you get rid of such a sweet car. To me, the 996 Turbo is WAY too over engineered and also very expensive. If cost is a factor (which it doesn't seem to be considering you have a CSX) I would keep the Cobra and go find yourself a nice used 993 Turbo, or the 993 Turbo 3.6 . Of course I sure if there is a female companion around that may also be the concern....
But re: the 993 Turbo 3.6 . It also, is blindingly fast is, "comfortable, has windows that work, warm in the winter, cool in the summer, you can drive it in the rain, comes with a great warranty" as you previously stated. I LOVE that car, much more so than the 996 Turbo. The lines are nicer, the car is a much better car for a driver who likes to DRIVE and not have the car do all the work. In short, it is a much more "raw" automobile, all the way down to the exhaust note. Plus, you could probably pick one up for a really good deal.