What are the main differences between the Ford Transit Custom and the Ford Transit?

I'm considering purchasing a new van and I'm torn between the Ford Transit Custom and the Ford Transit. What are the main technical differences between these two models?

The Ford Transit Custom is a bit smaller and more agile, making it a great option for city driving. The Ford Transit, on the other hand, is larger and better suited for long-haul trips.

Both models have similar fuel efficiency ratings, but the Ford Transit Custom offers a bit more power with its optional EcoBlue diesel engine.