The GT3 has a good sound. The base 991 does not. You know and I know that. Why in the hell should anyone pay more to make a sport car sound like a sport car? Regarding handling, I doubt very much would you be able to distinguish a substantially difference between what you own and the 991.
I guess the best reason to trade in is what Alan alluded to. He has had his car a long time and the time is to turn it in for another one. I have a similar situation. The lease on the TT is up in March of 2013. More than likely my wife will want another one. I certainly would not buy out the rest of the lease. Therefore, she will lease a new one unless I am so disenchanted with the 991 TT we look elsewhere.
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