With the discussion on this list and consultation with others, it seems prudent to buy a quantity of AX5043 chips. Based on the needs of RT-IHU and assuming PACSAT boards use the AX5043 (and a fair bit of overestimation) I'm going to order 250. It seems like a reasonable investment to push back the need to redesign our boards. In the meantime, of course, we can consider the use of other chips.

Jonathan