I do indeed like the idea of 900 MHz backup. Feces happens. Would be nice to have back-up.... But is that needed often enough to drive the radio choice? Spektrum seems very reliable from all that I have read, especially with the multiple remote RXs with antennas. I have only flown a year or two back in 2007-2008 with my only 2.4 GHz radio: Futaba 12FG. Never had a lock out or any issue. But I sure don't want one.....