Ideas for a fastish estate with £5k budget

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I'm after a quickisk estate car and have a budget of £5k.

Potential cars I thought of might be:
Audi RS6
BMW 330/530 Touring
Passat/Octavia V6 Estate
Octavia VRS Estate

Is there anything else obvious I should consider?
TIA,
Ste.

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Thanks for that..... Off to do some research