Any known Cooper S issues

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I fancy a MCS, turbocharged. I'm not so fussed about age but I do value low miles and high spec. In the glamorous world of Porsche ownership the 996 and early 997 cars are viewed with scepticism due to engine fears. I've seen a nice 57 plate car with a lot of spec which I fancy. However, there is talk of timing chain problems on those 07 cars. Were these problems resolved with the later cars? From what year should I be looking?

Always liked BOSE in a Porsche, is the HK system worth having?

Budgeting around £6k

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Thanks for taking time to reply. Seen a nice spec heavy 07 car but your pet confirms what I'd heard. Seen another 10 plate car with 3 k on it but it's not got many toys. Asking is £9k which is more than I wanted to pay but a deal may be achievable around 8k. I'll maybe keep looking. What year are issues resolved 58 onwards?

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The more options the better. Over and above standard I'd like heated seats, cruise,
Armrest, park sensors and nav, Bluetooth and usb. All make the car better to live with.

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Does the older supercharged car not chew fuel in comparison to the turboed cars?