No, not worth it.
Get the normal 911. Plenty fast and no turbo lag. Plus you get to hear the beautiful Porche engine without the turbo whine.
0-60 in around 5 seconds for the normally aspirated car is fast.
For the price of the turbo you're in Ferrari 360 territory. I would almost pay for a recording of that engine. But then again I'm Italian
The 360 could almost be called an investment. Remember when the Testarossa came out in the mid '80's for $90,000? They were going for 5 times that much a few years ago. Granted, the market has corrected, but the Ferrari is still a relative "bargain" compared to the 911 turbo. Even Car & Driver said the 911 turbo does everything perfectly yet has no "soul."
If you can afford these cars I commend you for your good taste!