Posted By jonr on 26 Aug 2010 10:03 AM
Have you looked through all the information available at:

http://www.buildingscience.com/resources/high-r-value

All three of the top rated walls used studs and some foam.

A more detailed performance simulation of most of those high-R wall stackups in very-cold climates can be found here:

http://www.buildingscience.com/docu...gh-r-walls