KEF Speaker recone vs replacement

Hi

I have a old KEF speaker and one of the woofer has developed a buzzing sound. A light tap on it will generate a rubbing noise to the voice coil. KEF still sell the replacement driver and it is twice more expensive than recone. Does anyone has any experience with recone and if it will restore the original sound quality? I hope to hear from someone who has did the recone before and about your opinion on the sound quality. Thanks.