I currently use one of each along with two super actinics. The Aquasun seems a little brighter than the actinic white to my eyes, but also has a slight pinkish cast to it. The actinic white appears as a true white. Hope that helps...
I use an equal combo of 2 Aquasun to 2 Super Actinic. While I haven't seen the Actinic-White I do like the overall appearance of my current setup. I am getting full spectrum coverage from the Aquasuns (10,000K) and the full Actinic supplementation from the Super-Actinics. My corals seem to be happy, growing and spawning under this lighting.
I also agree the Aquasuns are a bit pinkish, but have a very bright output.
I have 5 Aquasuns and 1 Super Actinic. My Acro colored up extremely well, my clam has grown a half inch a month and I've taken more than a dozen frags from the Pink Birdsnest.