You've got gravity feed, stand and fill, and regular raised broadcast. What are the advantages and disadvantages of each?

If you broadcast, you can't control who eats it unless you build a fence to keep the hogs out. A big flock of birds and some squirrels can also eat quite a bit of corn. With the broadcast feeders,you can control when the corn hits the ground. I like just before daylight so they are there when the sun comes up. I also really like having steps to get up to fill my feeder. If you are on a tripod, you need something to stand on to fill it. If it's hanging from a cable, you need to raise and lower it all the time. That sounds easy, but over time things have a way of not working so good anymore and it quickly becomes a challenge.

It sounds to me like if you want to feed only deer, and are not going to hunt over the feeder, the gravity feed might be best. (?)

Gravity Feed:
-Generally used for a nutritional supplemental feed (like protein pellets) and NOT attractant (corn)
-Allows deer to eat as much as they want on their own schedules
-Simple: No motors or timers required.

Broadcast feeders are generally used for attractant purposes. They do not put out enough feed to be used as a true nutritional supplement. Allows you to dispense a set amount of feed at times of your choosing. Commonly used to attract deer to a hunting area.

Raised Broadcast (Tripod leg or Winch-Up):
-Taller height will broadcast feed a bit further as well as allow the deer to feed under the feeder
-Simple design means, on average, tripod leg broadcast feeders will cost less than a Stand-n-fill which requires more steel and more fabrication work.

Stand-n-Fill Broadcast:
-Low height means no ladder, truck bed, etc is required to fill. Convenient.
-Offer greater stability and varmint resistance than raised broadcast feeders. Most are built on skids, so there are no legs to get pulled out of brackets, or be bent by other animals. With enough force Feeder can be tipped but won't "fall over" from losing a leg.
-Most use a heavy-gauge cage around the motor control unit. This limits damage from hogs, cattle, raccoons, etc. This in turn means a feed pen is not critical to prevent feeder damage.

At the end of the day, it really just depends on what your goals, desires, and budget are. Any more questions, feel free to shoot me a PM.

Thanks, that's what I was looking for.

There are also timered protein feeders. They will allow you to mix protein and other grains if you like. They also allow you control the amount fed daily and the times it is fed. More of a budget feeder. Some can be converted to feed protein/mix or straight corn.
There are also trough style feeders. Those are the cattle feeders or bunk feeders that you put the feed into. Some will put a shed roof over them. They generally hold from 1 bag to 10 bags of feed and are the most labor intensive since you have to fill so often. Also allow moisture to get to feed.

Trough feeders would feed everything. I first heard about gravity feeders when they were recommended as a way to keep hogs from the feed.

If you do not put any feeder in a pen the hogs will eat till they are full or keep the deer away not matter what kind of feeder you use. Trough style feeders are the best feeder for consumption but the most labor intensive and most feed exposed to elements/critters. Pens are a requirement. There are ways to keep the hogs from eating out of a trough style feeder but hard to describe via a post.

Also depends if you want to encourage night feeding. If you want to see deer during the day go timed feeding.