I wouldn't worry about it only having two oil changes so far, but at the same time I would also look into getting a new one just because it probably isn't that much more $$$.
When we bought our 2000 Civic in October 1999, we paid only about $2000 more than the price of a used 98! And since we got lower interest financing, it actually cost us probably the same $$$ per month to get the new one. I still don't understand why the Civic holds it's value so well up here, when the market is flooded with used ones. Sure they are great cars and very reliable, but when the market is oversaturated with something, you'd think it's value would go down.