Enom and Aletia both work well for me.

Wow, I just read though all of these posts and not a single one had domain.com.

Any reason why none of you use domain.com?

We currently use domain.com for all of our clients, as we are thinking about switching our domain to them on our next renewal.

I don't know if it's me or Domain.com, but their site takes a long time for me to load. Every page I go through takes at least 5 seconds to connect to. Extremely annoying.

It normally loads just as fast as every other website for me, even sometimes faster. A few times I have had to wait 20 seconds for it to load before though, but it normally clears up within a couple of minutes. (Doesn't help since my home connection is 1.5mbps down.)