The trick is to be sure it's far enough off the ground and far enough away from anything the little critters can climb up on to jump to the feeder. I have a three-tube feeder (don't remember the name) with a squirrel baffle on the pole that has worked for years. It's amusing to watch them try to climb up the pole and slide back down when they reach the baffle.

In my experience, squirrels can defeat most feeders. The tube feeders you mention work sometimes until the squirrel finds a place where his teeth can reach some small portion of the plastic. Even the metal pole mounted box feeders guaranteed squirrel proof are not. I've seen my squirrels sit on the top and hang over the edge to pick seeds from the tray without tripping the weighted perch. The baffles that mount above the hanging feeders are only temporarily effective. Post mounted feeders set away (11-feet) from anything are the most effective. The post baffle needs to be 5.5-feet high and the feeder cannot hang lower than 5.5-feet.

My dad uses safflower seed and hangs his feeders high on a post with a big baffle. This works most of the time for him. He gets doves and cardinals mostly with the safflower. The big birds can sit on his seed savers. I use a metal post with a baffle and (fingers crossed) so far it works fine. I even have a platform feeder hanging on mine. BUT, I have a crazy border collie running amuck thru the yard keeping the squirrels treed. Good luck, those little devils really take a lot of fun out of bird feeding.

I have one of the cage type feeders. The smaller birds have no problem hopping inside. The larger birds (jays and even woodpeckers) I see clinging to the cage and poking their head inside to get seed. The only birds who can't feed there are the doves. They will hang out and wait for dropped seed on the ground.

I will say that when the squirrels get really hungry, I will see them hanging upside down by their hind legs so they can stick their little arms into the cage and try to shovel food into their mouth! And my husband swears that once he caught a squirrel totally inside the feeder. (I guess the top was loose that day.) But truly, there are easier handouts available so they don't bother this feeder too much. Maybe twice a month at most. They never clean it out like the more accessible feeders.

The one I have I found at Petsmart on sale. It's cylindrical w/ a solid tray at the bottom to catch dropped seed, with a small drain hole for rain. All the plastic parts are completely inside the metal frame.

If you have your feeder on a pole, not a post, with a baffle, and far from any trees or shrubs or anything that they can jump from, you don't need to buy the feeder shown above for $69.99. I have squirrels like nobody's business and they do not get into any of my bird feeders. They can't get past the baffle trying to climb up the pole and there's nothing for them to jump from to get to the top, or above the baffle. It's all in putting your feeders up properly.

Bought a squirrel proof bird feeder last year. Caught a squirrel today doing exactly what bean counter describes, hanging off the top to defeat the weight cover.
I've moved it temporarily and inelegantly to hang off the (unused) gas lamp which has a slick-painted pole. So far, so good.

There are several really good squirrel proof feeders out there, but believe it or not - there is so much to know on how to use those feeders properly. Please check these squirrel proof feeder tips - it might seem like huge read, but it will help feeder choice for sure.

Good info above. I have had this one for years http://www.whatsthemodel.com/squirrel-proof-bird-feeders.html

and it is very low maintenance and takes a beating and keeps on ticking.

It's very entertaining watching squirrels and chipmunk trying to get to the seeds in feeders. I especially enjoy when they hang ,grasping the branches with their rear claws. When the feeders have a a squirrel baffle top, I have to hang them on tall Shepard hooks away from fences, or anything else that they can use to jump directly onto the feeder, bipassing the baffle.