I’ll take the /30, because I don’t want to share a subnet with someone else!
… Incidentally I know a “serious” organization IRL which actually takes this to heart (NSFL, and I promise this is a real, production machine):
x: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether <redacted> brd ff:ff:ff:ff:ff:ff inet 1.2.3.4/30 brd 1.2.3.7 scope global br0 valid_lft forever preferred_lft forever