More Robert Oster Blues

I had a request recently for a new comparison of Robert Oster blues, so I grabbed every RO blue ink currently in my desk (I don't know what that says about me that I was able to quickly come up with 25...) and started swabbing. I included Monsoon Sky, the newest ink I got and haven't even swabbed yet, but I feel like it's more green than the blue it shows on the bottle lid. Anyway, my top 5 RO blues: Blue Water Ice, Soda Pop Blue, Grey Seas, Evening Sapphire and Fire & Ice. Keep in mind that if you ask me tomorrow my answer will probably be different. What's your #1 favorite RO blue ink?