Buying a German SIM card from Canada

[kuba.g]

Originally Posted by Kritiker

Ortelmobile has a decent Netherlands to Germany rate but I have been unable to find its roaming rates.

You mean the Dutch Ortelmobile, right?
Then you can find these prices here: Ortel Mobile - Tariffs
For example, calling from Germany to any EU country costs €0,46/min.

Originally Posted by Kritiker

Am I correct in inferring that the D1 and D2 networks are the most widespread/reliable followed closely by E-Plus and that O2 is not quite as good?

In Germany it is, best to worst: T-Mobile, Vodafone/O2, E-Plus. Correct me if I'm wrong.