Which is better, the new Porsche 911 Turbo, the new GT3, or upcoming 2008 GT2?

The best Porsche is the Porsche that you plan to keep for 15 years+. Let's face it next year model will always be better it like the Intel x86 processor. So why throw all that hard earned money just to keep up with the Jones? My best and only advise is to stay with your one car, use the extra money to buy a very nice set of tools i.e. Snap on and a set of workshop manuals. Learn how to work on these nice machines. With the help of a retired Porsche mechanic from Germany I have learned how to change clutch, exhaust, brakes, rotors, fuel pump, A/C, dashboard meters, paint 911 wheels, and currently working on replacing head gasket. You really appreciate your Porsche 100 times more when you know that you are the driver, the mechanic, and the caretaker.

GT2 new cars always look better, but never go out they way that it was planned.

well of course the gt2. and porsche is trying to rev up its racing status. the names are chosen by tradition and the 911 is slumping in sales so it needs and new body style

The GT2 is a twin-turbocharged beast, with a load of power, and is rear wheel drive. The 911 turbo is not as powerful as the GT2, plus it's AWD, which makes it heaver, and slower. The 911 turbo is also fancier than the GT2. The GT3 however is an absolutely amazing machine. Naturally aspirated (no turbos), no frills, nothing fancy, just in your face power and excitement. The GT3 is a GT race car for the streets. It really is an amazing AMAZING car. Of the the 3, i'd take a GT3 anyday. The Carrera GT is in a class by itself. It is a high end,excedingly rare, highly refined supercar.

GREAT POINT! Im going to tell you a secret. Have you ever noticed most people dont keep a car over 5years or so because everybody wants to drive something new and nice.its about keeping up or having the newest car. You buy a car and in a couple of years the same car is reworked and looks better drives faster and has more features and guess what you trade in your car for it. The automotive big wigs are pretty smart because they have our money.

The 911 Turbo is AWD but has the fastest acceleration of any Porsche to date at 3.4-3.6 sec (depending on source) with Tiptronic, but I'd take the GT3. RWD, no "just for comfort" features, and it is a total track car. If I could have 1 car, the GT3 would be it.