Hi
Can't say I am an expert but I receive both Sky and German television. As far as I can tell moving the dish seems to be impractical since it has to be aligned spot on each time which I believe can be a pain in the behind. I think there might me a gadget which moves the dish but am not sure about it. I got a dish and receiver each for Sky and German television.
As far as I know any receiver should be able to pick up the signals. I picked mine of the shelf here in Ireland, nothing specific German about it. Cost about 50 Euro.
So, if it is a matter of aligning the dish once to receive German television I think that should not be a problem with your receiver as long as it is compatible re analog/digital. If you wish to receive English or Spanish TV as well you might want to go with an extra set but I am open to corrections, this is just my personal experience.
My dish here in Ireland is about 80cm across and works like a treat.
I hope this will help.
http://en.wikipedia.org/wiki/Astra_19.2%C2%B0E