Ned, Anxious to see your findings. If a D4 can shoot 90 shots before it starts having to bump the buffer on the earlier card, will the newer card shoot 111 before it starts filling the buffer? Maybe the number is 100 or even 150, but it seems to be a number that'd affect only a few people using a D4.
If the price of a Series S card is not much more than a Series H card, then I'd go ahead and get the faster one, but the best bang for the buck on a D4 might still be the slower one?
Edit> I just looked at B&H. The older Sony 32 gig H cards are marked "Discontinued". I guess that is a moot point now. The specs for the old Sony H cards said up to 100 frames in a burst and now 108 for the S cards. The S cards are 32 gigs for $200 or 64 gigs for $320 at B&H. The Lexar XQD 64 gig cards are $475.