Gravity feeders are nice but you will feed everything else too. Coons and other critters can really chow down on a feeder, costing you lots of money. Also gravity feeders can get the feed wet on the bottom and if wet long enough plug up and not flow, then the feed may also start to rot and mold. I only feed the deer in my hunting area to help them recover and make it through the winter. Here in North West Ohio it is all farm ground and starting in about late July the deer have a abundant supply or corn and beens. As soon as the corn put's on the ears and the beans make pods, deer never hit my feeder again. I suspect they will not hit it until there is snow on the ground and all the corn and been stubble is covered up. I have a stump feeder and it is gravity feed and I have had lots of problems when it rains. The corn wick's the water into the feeder and then the corn gets wet and molds. Next month I plan on hanging a Phantom feeder by moultriewhen I decide what I want to use for a barrel. I plan on using soy beans and a feed called sweet feed in it. Corn is nice but it does not have alot of nutritional value when hole and deer do not digest it fully. The main reason I am doing it is to hopefully grow bigger racks on the bucks. I figure the sooner they can recover from winter starvation the sooner they can work on there racks.