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I use freedns.afraid.org. I don't know if they/he are better then everydns.com but the updates seems to be quite fast. One of the domains I host there has a machine with a dynamic IP as target and it seems to propagate the changes almost immediately.
www.everydns.com is very good, they are hardly ever offline and when they are, they are usual back online within the hour.
So they are good for a non-business site? Usually an hour of downtime will cost a company 50 years of DNS hosting costs so it's usually not worth the hassle. But I can see for a hobby site it is perfect.