The S2k looks great, but not making any power till like 7k sucks. I was much more fond of the power band of the Z. Power pretty much anytime you planted your foot. S2k made me a little claustrophobic too. Very cramped, and I'm not big. And I'm never fond of a convertible top.
But, get what you like. Go back and drive them again. Decide what's best for you, not the rest of us.
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