I store all of mine in the retail packaging. Most of my tea, and all of my Chinese tea, is from TeaHong, which uses some nice foil-lined bags along with Mylar bags in cardboard tubes. Seems to do the trick.
The rest of my tea is from Den’s, which comes in a ziplock style bag: 
https://www.denstea.com/images/Powdered-Sencha30g.jpg
The one Pu’er cake I’ve had I just left in the tissue paper.
Here’s a good article: https://www.teaguardian.com/how-to-make-tea/tea-storage-container.html#.Ucx3r9jLsko
M.
