I have been enjoying the 3940R I purchased two weeks ago, wearing it around the house and on the occasional dog walk. I've rotated it with my other watches, including my 5146G-001. When I made the step up to the 3940 Perpetual Calendar with its elegance and history, I thought the 5146 Annual Calendar would lose some appeal to me, like an old girlfriend does when you move on to the one you really wanted. Surprisingly, the reverse has been true. I really appreciate the size, wrist feel and legibility of the dial on the 5146, along with it's relative solidity as compared to the delicacy of the 3940. It's fair to say I don't regard one as "better than" the other, just different. And I guess this is a reason why we build a collection — to enhance, rather than replace, what we already own.