I've got AquaPro, that's a little over a year old. I had some issues with it last year. Jammed up a few times, then replaced the wiring harness. Moved the solar charger from east side, shaded to west side for the most sun. So far his year it's been running very well.
I'm running optima feed through it without any problems. I did not see the "Outback" brand anywhere, as I was looking for feeders last spring.
The only thing I really wish I could change about the AquaPro is that some of the feed, not a lot, lands very close to the feeder. I wish it was zero for the first 10' or so. My water level has dropped due to leak, and low rainfall this year, and it's a little bit longer shot, just to get to the water. No problems with coons, and their tracks are all over it. I've trapped over 20 in the last year. I think the supply is endless.

12 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (decreasing), SMB, and HSB (only two have been seen in 5 yrs)
I think that's about all I should put in my little pond.
Otter attack in 2023.