Ultimately, one probably has to say that all variants do not differ very much. The question is also whether you still want/can save into the [Bausparvertrag].
One more question I have... :) Does anyone happen to know if the [Wohnungsbauprämie] is lost if I continue saving and the [Bausparkasse] will terminate the contract in a few months?
The [Bausparkasse] cannot simply terminate the [Bausparvertrag] for you; otherwise, they probably would have already done so :-)
The important thing is that you use the money in housing construction; otherwise, a refund is actually necessary.