Thanks guys, I'm not worried about the current draw because all the servos connect via a poxbox. The reason for asking is Im after a cheap autopilot to put loads of flight hours on our UAV during the test phase, it would be much easier having the UAV fly a flight pattern via GPS co-ordinates then trying to manually fly it all the time.
You shouldn't have any problems. Digital's have a high frame rate and have more power and use more power. Better centering and higher holding power. They would be idea for larger UAV's but will work find.