I never tried the soda pop bottles, but have used lots of the mason jars over the years. I still have some big old wine bottles that work good for feeders. Kind of a pain to store like all glass. I went to the round black plastic jugs some years back and thats what I use now. If they were rectangle and held a bit more syrup they would be perfect.In a pinch, you can always find something to feed bees with.