Hello,
we too are currently facing a tough choice. Type townhouse, windows HE-door and roof in RAL7016.
Facade definitely not white, because after a few years it either turns dirty white or it is so white that it blinds you and a lot of bugs sit on it. Strong colors are also rather out of the question.
Since taste is known to be subjective, here is more my question on the topic:
Besides a color fan, have you used any other aids or samples: exhibitions, paint manufacturers, neighbors, a one square meter test coat, simulation software, etc....????