Is there a tangible advantage of using one registrar over the other?
Gandi also has a nice API to manage the domains. I use that with a simple shell script to have my own dynamic DNS.
So if your usage is as limited as mine, no major differences really.
In steady state, most registrars seem equivalent, and the main difference is how they handle billing.
In other words, whoever controls the registration controls the nameservers, and whoever controls the nameservers controls the MX records, and whoever controls the MX records can reset passwords. (Ideally, we'd all be using MFA for every possible thing, but in practice that may not be possible for the hundreds of services one might be using.)