The solid green are heavier metal then the silver are galvanized. The 300 and 600 are are galvanized and the 1000 and 2000 are 16 ga black iron and painted. They also have a new game guard camo stand fill line launching next month with new updated stand on the bottom.
I know this may sound too simple but my Cuz just shortened his current feeder legs....now has stand and fill feeders. He has eliminator plates on his spinners. No cages or anything. Works great.....deer love it and zero issues