Tagesschau? Really? To often they show pictures from wrong places and have a lot of hoax. Just google for "tagesschau falschmeldungen". I personaly trust Spiegel more... but thats only my opinion ;)
Googling that brings you to Putins fans and islamophobes. Googling that with Spiegel brings you to Spiegel Online...well I don't know. I'll stay with the tagesschau for my daily 8PM news overview and look for details somewhere on the net avoiding Spiegel Online. Can't do anything bad this way ;)
As said, its just my opinion (and iam not a Putin fan or any fan of any politican out there). And i also look the 8PM news at Tagesschau, but, as you said by yourself, its always good to get more details somewhere else (SPON or not)