We took an intermediate approach and used "panelized" construction for our addition. The wall panels are factory built with extremely little waste on a flat dry surface, sheathed and insulated with closed cell foam. (The CAD-driven milling machine that cuts all the parts for optimal use of materials is way cool!) Everything went together just fine the first time. Panels are trucked to the site and put in place with a crane or lull. Interior finishing and rough-in are the same as stick built, which made our inspector happy. It didn't save any money, but cut about 8 weeks out of the schedule and I think quality was better.
Q
Hall/wall mudroom for entry
Q