Agreed, if you're buying from an AD it will certainly be real. You should get the watch, the spare links after it has been sized properly, inner leather case, inner box, outer box, warranty card, COSC, manual, AD leaflet, hangtag, manual for the slide rule. Depending on where you live you also might get a few freebies. And you really should get a big smile and congratulations from the sales person.
I really like the 6.75, but I guess you can tell that from my signature, and even if it is a big watch it feels more slim than the SA. It's not as deep (or fat) as the SA. I love the big date complication and also the color of the date font, black with a small reddish touch. The speed bracelet is really nice, but in my opinion it could be a few mm wider like the Navi Montbrillant Legende. The case is also great and the bezel really catches and reflects a lot of light. The back with the spokes is not at all uncomfortable as some might think. All in all - a great watch!
