IMHO, if you're just an average guy who wants a nice sports car and won't be tracking it, save your money. I don't have either and I'm getting just as much enjoyment out of the Z as all the others with the exception of those that track their cars plus I saved $4K for the SP and $2.5K for the less than spectacular nav.
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"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP
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