Original DARTS are the nicest
 

Whenever I wait for a Dart, I always hope it will be one of the original ones - they just seem much more comfortable with their 64 seats per carriage rather than the 40 on the newer ones. Maybe its also their low seat backs that makes a carriage almost feel more like a room than a train.

What a shame the design was changed on the newer ones, needless to say to increase capacity. I'd still rather stand on an old type Dart.