Congrats on the new additions! Out of the ones pictured, I really like shooting the XD-s--it's really a lot of fun! JoeBob Outfitters had 7-round magazines available when they first came out. I carry those as spares, but without the collar because they won't fit in a regular magazine holder. Once you remove that collar, they're pretty close in size to 1911 magazines.
Ammo by Dillon and Hornady