I'm back from a day of builder training at Stratford Homes.  They have added a bunch of awesome products to their already extensive line of options.  The new Guardian spray foam option really caught my attention.  This "hybrid" system is composed of spraying 1"-2" of spray foam to prevent air infiltration, then adds a fiberglass batt insulation in the space remaining.  This creates an R-24-R25 in a 2x6 wall, fall surpassing the industry standard of R-19.  I'm sure you are asking why use a fiberglass batt insulation in the raining space.  First, with batt insulation, additions can be made to the wall, such as adding adding electrical for a wall sconce or communications lines at a later date in the future.  The second reason is that is helps to keep construction costs down.
It always pays to save energy, than to produce it.  This new offering will accentuate everything Stratford Homes and Contemporary Homes do to make our homes the most efficient on the market.  Happy Insulating!