Double stud vs exterior insulation

Is there a consensus yet on double stud vs exterior insulation? I’d like to build at near passive house levels, R30-R40 effective wall r value. I was initially thinking a… Is there a consensus yet on double stud vs exterior insulation? I’d like to build at near passive house levels, R30-R40 effective wall r value. I was initially thinking a…Read MoreGreenBuildingAdvisor