I've had the Rega Apollo and it is is very good but lacks some bass which you may or may not like. I've had a dozen others but that is the only one on your list except for the one I own now: Audio Aero Prima mk2. I love my Prima. It isn't analytical like many digital sources (I don't care for clinical CD sound), has great bass foundation to give correct tone, a rich and detailed midrange, super good timber (important to me), and a wonderful top end that is detailed and exciting but not in your face or bleached out. I have yet to try an A5 although I really want to. Good luck and have fun!
Arthur
Arthur