Apart from the slightly heavier viscosity, and an xW-30 would be fine, the xW-40 oils are heavy duty diesel oils so the additive package is more robust.
The Euro Energy 5W-30 is aimed at and specced for and blended to suit passenger car diesels and yes, although the Td5 (and Tdi) are light commercial engines I'd rather have the much more robust add package used for the big engines protecting a very hard working little engine.

