I'm a little of both. I do think more with my head when since having kids. I think, because I have to be aware if the long term outcome.
Saying that though, my head and heart can be on the same wavelength. My head does a little tweaking of the heart to make it all work. Does that make sense?
You know, it doesn't always have to be one or the other doing the decision making. They can work in harmony.