OxyContin use down, but at what cost?

So which is worse?  Oxycontin or Heroin?

Efforts to make OxyContin harder to abuse have succeeded in Vermont, the top state police drug investigator says. But that has come with one notable consequence: Addicts have been switching to an older scourge: heroin. 

Statistics provide a glimpse of Vermont’s growing heroin problems. Deaths attributed in whole or in part to heroin overdoses averaged fewer than three a year from 2004 to 2010. There were nine such deaths last year, and six this year, according to figures from the state Health Department. . . . .