I watched both
Delicatessen and
Mulholland Drive yesterday, and can say that both had excellent HD transfers.
The DTS HD Master audio on
Mulholland Drive was incredible; particularly during the famous 'Silencio' scenes. I was also surprised at the amount of grain visible in some of the scenes in Delicatessen, but it didn't dirtract, and added to the mood and style of the film perfectly.
I love both these films, and they are both essential Blu-Ray pick-ups in my opinion.