Best 'Driver's' audi ever made?

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So what is it? I'm not worried about having four seats or a boot. Tell me where to spend my money!

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I love the brand. Build quality etc. I suppose I'm asking which is the best R8? But if a tt rs has got a large fan base then I want to know! Which year is best? Manual v rtronic, stronic? V8, V10, plus? Gen 1 or 2? Just give me your views...