I bought some new Sig Zulu6 HDX bino's and they didn't fit in my Marsupial Enclosed harness. So I spent a bit of time researching and really the top choices are very very similar (Marsupial, T&K, Eberlestock, Kuiu, Kifaru, Badlands, etc...). I decided to go with the Badlands X2 (their EZ style didn't have the right size). It should be here later this week to try it out.
Reasons for the X2:
Magnetic lid (no issues with my marsupial, the size/color I needed was out of stock)
Phone pocket
Smaller wings with molle attachments for range finder etc...