Note that QDID 51750 (End Product) is the correct one to use for the BCM207376S and the others in this family (BT 4.0)
QDID 61027 can be leveraged across the family for BT 4.1 (Component).
The BCM2073X family from a stack and HW perspective are all identical as the BT Sig is concerned with 'stack' compliance and interoperability.
The antenna selection is not related to BT Sig Stack/interoperability certification, but is very important for regulatory (FCC, TELEC, etc.)
The link here provides alot of additional information:
Including links to the BT Sig website where addition materials are available.
I just confirmed with our internal BT Sig contact that my response is accurate.
The only feature difference between the 2 listings is that we added GATT Client, Time Profile, and LE HID to the 4.1 listing, which shouldn’t matter to most.