My impression for Singapore : Safe, clean, efficient.
Taxis were relatively cheap, we paid $6 from our Hotel to Universal Studios. From the taxi driver we realized that we drove through a toll without having to pass through a toll station. There were machines hanging on top of a place, every car in Singapore has to equipped with a machine with AutoCard, and the machine charges the AutoCard each time a car passes. What a wonderful system? Imagine don't have to queue or be slowed down through a toll? I wonder why can't Malaysia do the same, at least to slow down traffic jams.
We are neighbors, but Singapore is way more advance and efficient in many ways.