http://www.invisifilm.co.uk/
Their work is exemplary! No bubbles or wonky edges. They have done quite a few rs6's now. There was mine in and also a Noggy C7 RS6 performance too at the same time!
Worth a look if you are wanting PPF.
Managed to get mine installed before picking up any stone chips! Also had their resident detailer use Gtechniq on the full interior so feeling more than happy now with exterior and interior protection!