I began buying Genie bras (no zipper) about three years ago. Since that first purchase, I have bought nothing else. I have about ten now.
I saw them first on the Genie infomercial. The first time I saw them in a store was at Bed Bath & Beyond. I bought a package there, and have continued to buy them there. A package of two runs about $20.
When you examine them in the store, be aware that the pads in them come out through a little, neatly made slit.
And I buy one size larger than my blouse size.
I am large busted, yet the Genie gives great support and comfort. They last well----I am still wearing the ones that are three years old.