I have the 5 compartment feeder for Shadoe and love it!
You can set the timers so that there is no food available for the 2hrs pre shot which is pretty important if you are not going to be home until just before pre shot time.
Also, I can tell when Shadoe ate and how much she ate at those times.
I got small round glass bowls that fit nicely into the sections which makes it simple to freeze portions. At nite, I can fill the bowls with portions I want Shadoe to have, put the bowls into the freezer, then in the morn, I just drop the bowls into the sections and close the lid. Others just freeze portions in ice cube trays and then drop them into the sections.
I leave enough food so that she does not have to eat all of each portion or she will be starving; I put a bit extra because I have found that at certain times of day, she is napping, and often the afternoon portion is only partially eaten.
The feeder does make a quiet hum as it turns to the next section, but very quickly Shadoe learned the sound and that is meant FOODS! She comes running when she hears it. She was scared of it at first but I first got her used to it by putting food in the open section and did not have the batteries in it so it did not turn. There are different ways to get them used to the sound and eating from it; at one point I put her food bowl just in front of the feeder so she got used to eating near it, then eating from it, then recognizing the sound and still eating from it.
Regular feeding is very important to regulation I think, so when you are away for long hours, the auto feeder helps to ensure the foods are balanced and not eaten too quickly. I don't think you will be disappointed in using a feeder.