On the ECOflex estate, my Bridgestone OE tyres lasted 33,000 km, but suffered from road noise. I decided to buy Avon ZZ3 tyres on the basis that they are British and mid price range. I've done 16,000 km on them (they are less than 1/2 worn, so expect the same mileage) and must say I'm very happy with them, the road noise being much reduced, and to my (limited)knowledge, no different in performance to the Bridgestone.