I'm spending my money on new genuine Renault parts to tidy up my Cup interior. Nothing worse than gash, scratched, sticky door pulls. Yellow/green, mouldy looking rear number plate lights. Torn and worn gearknobs, wipers blades well past their use by date! Oh and a fresh brand new parcel shelf, uncut.
It's the small attention to detail parts IMO that make the difference, some of the parts prices are a steal so while they are i'm buying them new, especially Cup parts.
I know after owning R5 GT Turbo's, i had a mint tungsten grey R5 and spent £1000 on brand new genuine parts. As the parts were few and far the parts went up in price big time.