Can someone recommend a good brand for collapsible decoys?

I have the flambeau foam mag mallards. Can fit a dozen in a book sack. Work pretty good for what they are.

I have the Featherlite Fusions. They have the hard plastic molded heads and a sand bag in the bottom. They are kind of heavy but not terrible. They hold up pretty well. I have had a couple of the sand bags come loose inside from throwing them. This causes them to lean hard floating, but you can shake it around and it does fine. Look for them at wal-marks, shipping from Cherokee is high.
I need some more myself, but they are hard to come by.

Anybody ever use these FUD?

I use the inflatable ones you get at Wal-Mart. You could carry as many as you want very light.