We have the Playmobil grand mansion and with all the room sets the play value is huge as there are so many little bits to play with. I don't know about the Barbie one though as DD hasn't discovered them yet! I think she will play with the Playmobil for many years to come gradually getting more sophisticated in the stories she enacts.
I'd go kidkraft. We had the playmobil Castle (fairy one) and it fell to pieces all the time. We have a kidkraft dolls House from costco and dd (9) plays with it all the time. She uses it for her monster high dolls mainly.