What is your favorite domain name provider, and why?
Is it one that you just use and works just fine? Or one that has proven to be reliable and responsible if they do a mistake and only want to satisfy you as a customer?
I recently switched to Porkbun from Namecheap specifically because I found Namecheap's "advanced DNS" settings to be somewhat excruciating to use, plus I also (finally, after doing it manually for a good few years) got around to setting up Certbot autorenewal, and there's not really a good way to do DNS challenges for autorenewal with Namecheap. Just generally I find Porkbun's UI to be very simple and streamlined without actually hiding anything from me. I also found that my domain renewal prices went down with the switch, something I didn't even consider when switching.
That being said, Porkbun and Namecheap are literally the only domain registrars I've used. For all I know there could be something out there I'd prefer way more.