I have been flying a Super Frontier for a year and a half. It flies very well with a mega 45 super box geared 2.5:1, 16x10 APC prop 16-20 cells 1700 nicads to 3000 nimh. 7-14 minutes depending on type of flying. Weighs 9 pounds plus. Climbs agressively on 20 cells. I have flown as high as 1500 feet for aerial photography. See here:
www.pam-rc.org under picture gallery. Its a great plane. Today I would use the 4120 to avoid the gearbox.
Greg: the specs on the plane are:
Wing span 80.5 inches, Area 1232 square inches