6-3 is not even close when it comes to the SCOTUS. Both Justice Roberts and Justice Kennedy held that despite the language of the statute, subsidies are available through the federal exchange. I am sure there will be plenty of analysis to go around. The bottom line is that by this decision nothing has changed. "You can go about your business. Move along . . . move along."
UPDATE: Scalia offers a classic in his dissent. "We should now refer to the law as SCOTUScare." That is not an exaggeration. This is clearly the SCOTUS preferred approach to health care reform. Not exactly, the "umpire calling balls and strikes" that Chief Justice Roberts envisioned at his confirmation hearing, is it?