I have an account at Dynadot. I was an early Dotster user when they were the best alternative to Network Solutions, and then an early user of GoDaddy for many years now. Now, I think Dynadot is the best, and you should, too. :)

It has a clean user interface and even lower prices than Godaddy. If you deposit $500, you get an API and even cheaper prices.

They also have "domain tasting" for everybody for 5 days, which means you get a full refund for your domain name in that time period. Therefore, you can register domain names and cancel them later if you change your mind. I've lost a lot of domain names where I hesitated registering them for a few days.

Oh, and their domain privacy is only $2. It doesn't obfuscate your name, just all of the other parts. However, they can forward physical mail sent to the domain's private address to you, though I'm not sure what the cost of that is.

If you do choose to use Godaddy, always buy with their 20% off coupons found on Google if you're renewing. If you're registering a new domain, simply google "Godaddy" and then enter by clicking their ad on the search results of Google. That will give you 6.95 pricing instead of the 9.99 they currently charge--that's $3.04 cheaper per year per domain!