I have sent both my VX-IIs 3x9x40s back to Leupold and had them changed to the Heavy Duplex...It cost about $80...As I got older the regular Duplex was harder to see, the Heavy Duplex stands out better in low light conditions, I like them....
PS...Both are used for deer...one a Ruger M-77 in .243...the other a Knight Disc...