Guaranteed income, because not everyone wants or is able to work.
People who are not able to work or able to get a job are people society should care for.
People who don't want to work, but want money from somebody else are worthless parasites, who should be beaten until they get a job or stop asking from money from somebody else.
As for the question; I'm most favourable toward guaranteed income following Franzl's model.
Are students and single mothers "worthless parasites"? Typically, both of these groups don't want to work but could work. I don't have to point out why it would be idiotic to expect them to work.