John, While I don't have any Rolexes and can't speak about a comparison; I do love the OS Chrono! I bought one last year and it's easily my favorite watch. I can barely take it off and the bracelet in addition to being comfortable is also stunning....like a piece of art!
It's a very comfortable watch to wear and mine is RG with a RG bracelet so in spite of the weight it feels very comfortable. In my quite prejudiced view it's one terrific watch. Here are a few pictures:
Best regards and happy hunting, Tom