I moved my handful of domains from godaddy to namecheap perhaps a year ago. I've had no problems, so couldn't comment on their support, but I've been happy.

Namecheap has been great for me, too. I recommend them.

I use joker.com and have been very happy with them for many years.

There are a bunch of good alternatives, apparently. A lot of people point you towards 'Nodaddy.com' when you get sick of godaddy. It has a bunch of horror stories and list of alternatives. Check it out for a big list of alternatives and reviews.

I switched to Dynadot and havent had a bad experience. Their interface is simple, quick, and clean. The pricing makes sense, and their people are friendly and helpful. YMMV.

I've found ovh.com to be pretty good, but they've only got localised sites for some European countries (look for the flags at the bottom of the page), so they wouldn't be much help in the US. I've had good experiences with gandi.com, but they aren't the cheapest (anymore.)

I have used both namecheap and godaddy. I did not like godaddy at all. Namecheap is much better than godaddy.

I use Dreamhost, since I have some domains hosted there. No issues, but it's mindblowing or anything.

Dreamhost is only good as a registrar if you have hosting. If you don't have hosting there and don't plan on it, don't touch them.

I registered a domain with them yesterday - but have separate hosting, so don't need to buy more of it from them. I'm unable to do anything beyond change DNS servers (no custom mx records, for example).

When I contact their support about something, it usually gets a prompt (within 10 minutes) response. But when it deals ith deleting domains, they take forever to respond. And they refuse to let you delete/cancel a domain. Even though ICANN's policy lets you do so for 5 days with the grace period. Since the ICANN still hasn't changed the policy AFAIK.