What kind of heatingsystem?

Hi, we are planning to add on to our Eichler. We are debating what kind of heating system we should install. We wanted to keep/install radiant heat . Does somebody have any experience with electric or hydronic system. We did some math and we know that electric is much more expensive to maintain. Does anybody have have electric and solar ? What are the maintnace costs? Also what companies have you used? Any experience with German radiant heat companies? Thanks so much Eli