They're both HORRIBLE HORRIBLE candidates, but short of getting us into WWIII, I actually think that Hillary could do more long lasting damage to this country than Trump ever could. Bill Clinton did some things on his way out of office that we're still dealing with.
Bill Clinton was part of repealing Glass-Steagall - which played a huge factor in the recession that we're still getting over. Bill Clinton signed NAFTA - which has damaged our economy in the past 20+ years and helped create this income inequality that Democrats continually cry about. Bill Clinton signed the Telecommunications Act of 1996 - which has led to the rise of companies like Comcast. And now we have Hillary talking about how she wants to pass the TPP. We're so completely screwed. We can count on Hillary to first and foremost want out for her corporate overlords, and screw us over without thinking twice.