Dnsimple for me. Swapped from GoDaddy like 10 years ago and haven’t really felt the need to explore elsewhere, the costs are pretty good and never had any issues.

Just put the card in your wallet and scan it like a metro pass card.

The containers are useful for having multiple accounts. Eg I have a work tab that has my work Gmail/PayPal/etc accounts logged in, so I can easily switch contexts without closing all my other tabs/windows