The 5414907-3: The bayonet lock gives a positive mate that won't back off under light vibration.
500 Mating Cycles and a Bayonet Lock — Field-Service Grade
That cycle count tells you this jack is built for install-and-service, not for a production test fixture that sees thousands of connects. If you are swapping a card or re-terminating a cable run a few times a year, the 500-cycle spec gives you years of margin.
The package is Bulk, which suits both prototype builds and production runs without the premium of cut-tape or reel fees.