I'm running their LDX Excellium 5W-40 in my cars for the summer months and it seems to be a very nice oil. A small hit on gas milage in city driving but no change in highway driving. Cars are nice and quite too.
I just returned from three weeks in France. On the rear window of every Renault it says (in French), Renault recommends ELF.
On the rear window of every Peugeot, it says (in French), Peugeot recommends TOTAL. Don't know what Citroen recommends.