Well, either you will receive health care via your husband or you will have to arrange it yourself. There are various Krankenkassen available - the concept it difficult to explain. In the UK, NHS care is not provided for free, some money is taken from your salary to pay for it. The difference in Germany is that money for the 'NHS' is not taken from your salary per se, you have to chose a Krankenkasse (like BUPA only its not private, although you can of course go private). You need to look at the different Krankenkassen to see what they offer (all roughly the same), chose a tariff and then this will be taken off your salary. Some Krankenkassen offer to insure the wife as well if she is not working, hence I said you might be covered via your husbands.
Essentially, the care they provide is mostly the same. Perhaps if you pay a bit more, you might get a private room for the delivery, although I think most hospitals don't have more than 2 women to a room anyway. I think you get three scans across the whole pregnancy, if you go private you may chose to have an early scan at 8 weeks or so.
Where do you think of moving to? I can have a quick look at the hospitals if you want me to.