Generally speaking, Germany offers a wider Range of MSc, it's not too big on the Exec-BSchools.
If you know the german language and possibly plan to work here imho it offers great opportunities:
1) Admission for foreigners with a 650+ GMAT shouldn't be a problem.
2) put in relation the size of germany's economy to its number of respected Business schools and you'll understand why Alumni from WHU, Mannheim and HHL and a few others are much sought after.
(Hell, people from the lower 50% of WHU undergraduate occasionally get invites to McK & IB interviews!)
3) Yes, German BS dont have the best reputation in the world. but Germany itself is a huge market.
Mannheim has the highest salary of all MSc in Mgmt in Europe, beating LSE, HEC, ESADE...
MSc in Management is 500€ per semester - the standard fee for any degree on a german public university.
rankings.ft.*com/pdf/masters-in-management.pdf
(remove the * - i am not aloud to post links a sa new member
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Most MBAs in Germany are fairly new, they'll need more time to see what good they are.
hope that helps, for other schools across Europe check out the CEMS-programme.