So I pulled the trigger and bought a 740b!! I havent flown with it yet (need to wire in a power supply for it) The display is very crisp, so we will see how readable it will be this weekend. What is the power requirements for the unit?
From the iFly store
Power Requirement: DC 12V~28V
And at 12v it will pull a max of 1.5 amps, average 1 amp.