I love the positive vibes this thread has. It always goes down the same hole.
The DD mileage per casualty is as good as any other service with 30 year old loco hauled stock.
The Transport for Wales class 67 mk4 combination has a worse failure rate but are often able to hide this as they have a lower availability requirement.
The 201’s have had a pounding with 30 years front line service.
Soon we will all complain about the new enterprise stock being a plastic bucket and not a real train.