They haven't screwed me so far.

I moved my domains to Porkbun over the last year and I’ve been pretty happy with them so far.

I use them too. Great customer service with a real and competent person on the line right away. Decided to go with them after some searching. I was getting off Google and they had an actual office and pictures of the people who worked there on their website. Some of their marketing is a bit corny but have had great service over the past few years.

support isn't that good if you ask me. when I had a problem with my account and they couldn't resolve it, it took quite some time to get my domain back under control.

Yup using them too, can't fault them. On the rare occasion I've needed support its been quick.

Route 53 is a Gandi reseller :) (I don’t know about Cloud Domains)

From another perspective, decoupling your domain from your cloud host means if things go wrong with your hosting you can still migrate to another host with a DNS change. I feel like I'd be more likely to have an issue with a hosting provider than a DNS registrar, but maybe that's a bad assumption.

Also recommend Namesilo. Always good pricing for renewals. The website is a bit outdated, but I prepay for 10 years and rarely have to deal with it.

Used to talk to the guy that founded them, he was a stand up chap. Great to see they're still around. They used to be a ResellerClub/DirectI reseller but like me (also ran a registrar) they were moving away due to the crappy service being provided.