Ford is behind on the 6-spd tranny still used in most everything. The 10-spd is making it's way into a few models, but 10 may be too many for most vehicles. 8 is about perfect. I've read 9 is often too many in some applications, and FCA had lots of issues with the earlier 9-speeds.
2015 MKC Reserve FWD: Ruby Red, THX, Technology Package