I think both would be bad.
She would most likely be another 4-8 years of Obama. To the right, that is the worst ever. To most, that is not great, but not terrible. Internationally, I don't think she gets us into anything (but also don't think she handles issues that well.
Trump? He can't control his mouth. What happens when he says these things and is the President? How does the market react to a leader saying such things? I think he is more likely to get us into something crappy internationally. Something we don't belong in at all. He would have to surround himself with great people (not "they will be great, trust me"...but real great people).
I have zero faith in either of them being good.