AAA by the handle comes in plastic. I decant it into a 1L glass bottle not because I expect it to go bad but because a 1L bottle is easier to pour from. After several pours, I can't be foolin' around with that family-sized jug.
That's exactly what I do, but with 750 ml bottles. The Heaven Hill White label, Green label (90°) and AAA 10 y/o all come in plastic handles and I usually get at least two of those three when I'm in Kentucky. I have stored those in my garage for months in some cases and I have never noticed any change in the taste of any of them.