reputable independent v OPC

[RNP1]

Can anyone help re the above?

I'm in NW London and will be needing a 12,000 service on a 944 s2 and a few other small bits doing.

In respect of the service I've come accross a company called JZ Machtech (who have been very helpful over the phone and have fixed menu pricing!) and re fitting of a CAT 1 alarm/immobiliser and new stereo a company called Hamilton & Parker have been mentioned.

I'm not sure whether to go to the OPC as the car has all previous services at an OPC - will it make much difference if I "break the chain"?

[RNP1]

Thanks Fergus.

[rnp1]

Thanks for the input chaps -looks like I'll be using them too!