After several purchases of Rolex, Omega and similar nice watches, I have caught the "bug" and I am considering "moving up" to a Patek Philippe. I am, at this point, primarily interested in a Nautilus 5711. In some of the research I've done, it looks like there is a "regular" model (40mm )and a "jumbo" model (43mm?) - is that accurate? If so, are the model numbers different? I couldn't seem to locate the "jumbo" model on the Patek web site, but I may have been looking in the wrong place.