below is a 3rd party critique on both plans:
Senator John McCain's (R-AZ) health plan would eliminate the current tax exclusion of employer payments for health coverage, replace the exclusion with a refundable tax credit for those who purchase coverage, and encourage Americans to move to a national market for nongroup insurance. Middle-range estimates suggest that initially this change will have little impact on the number of uninsured people, although within five years this number will likely grow as the value of the tax credit falls relative to rising health care costs. Moving toward a relatively unregulated nongroup market will tend to raise costs, reduce the generosity of benefits, and leave people with fewer consumer protections. [Health Affairs 27, no. 6 (2008): w472-w481 (published online 16 September 2008; 10.1377/ hlthaff.27.6.w472)]discuss.The health reform plan put forth by Sen. Barack Obama (D-IL) focuses on expanding insurance coverage and provides new subsidies to individuals, small businesses, and businesses experiencing catastrophic expenses. It greatly increases the federal regulation of private insurance but does not address the core economic incentives that drive health care spending. This omission along with the very substantial short-term savings claimed raise serious questions about its fiscal sustainability. Heavy regulation coupled with a fallback National Health Plan and a play-or-pay financing choice also raise questions about the future of the employer insurance market. [Health Affairs 27, no. 6 (2008): w462-w471 (published online 16 September 2008; 10.1377/hlthaff.27.6.w462)]