I've been using an Eheim dual chamber feeder for better than 2 years, no problems. No experience with any others. Only minor issue I find is large flakes tend to dispense unreliably. They do eventually, just seem to get pushed back up into the hopper instead of making their way out. Pellets dispense easily. Runs on batteries, LCD display, battery level indicator, plenty of programming options. Up to 3 feedings per day per side. I built an acrylic bracket to hang on the side of my display.
