There was an early post that mentioned just a hollow glass decanter stopper but I recently happened to find in an antique shop several used decanters with different stoppers, cork, plastic and glass. I need help in deciding which to buy. They are all under $20.00.

I know there are a lot of knowledgable people on this site so my question is: What stopper will last longer, cork, plastic or glass? I'm assuming glass except I'm wondering if by repeated use, will the glass slowly chip away or not have a good seal? Will the plastic stopper degrade or split and will the cork eventually dry up and crack?
I appreciate any ideas... .