Set up google plus page for my brand, just for seo reasons--to get found in search results or on G+.
Set up google plus profile for the benefit of my face next to posts and the increased Google love.
Do you link to your company page at all?
Or do you just show a profile badge in your sidebar?
Or do you have the page badge in the footer or something?
Obviously it makes more sense to post entirely to my profile and leave my page as a static billboard basically. But what way makes the most sense to you?