Well, count me among the Madstad owners, just got off the phone with Chris and ordered a set up which should be here next week.
I had read this thread a few times and wanted to clarify what would be sent before it got shipped so here is the rundown from Chris as of today, as was mentioned the F6B package now ships standard with a 10" Base plate and not the 8" that it used to when it was first in production. It also ships with the shield that has the shallow bottom contour. Good news for me, since both of those are what I wanted.
I was unsure if I wanted the 11" or 13" shield and Chris was a bit on the fence, but leaning toward the 13", as well since being 6' I fall at sort of the middle ground of the two. He of course told me that I had the option of exchanging the shield but I felt like unless I got to try both back to back I would always wonder if I made the right choice. I chose to order the 13" system and then also an 11" replacement shield. Whichever one I decide on I will keep and the other will get returned (or sold here if someone wants it).
Now the hard parts, waiting for arrival and trying to keep the wife from beating me for ordering more chit.