Just a quick note - I'm loving MC 13.
I find that 13 is much more polished, refined, and straight-forward than 12. I hadn't done much work on my collection under 13 until this past weekend, and at first I didn't realize how great the menu/view changes were. Having spent a number of hours deep into my collection, I'm very impressed with how the different dialogues have developed, bringing a lot of MC's power to the surface while making the wizards and menus less instead of more confusing. For instance when writing an expression, the context help is great - simple, clean, and not in the way.
Kudos, thanks for all your hard work.