I bought an '04 EX with 6K on it back in 2005... I now have 75K on my E and it's been the most versatile and reliable vehicle I've ever owned.
There are really only minor changes from 03 to 04, for instance the passenger seat didn't have an arm-rest until 2004...
In 2003 there was only the DX and EX editions, as the LX was introduced in 2004.
Honestly, there is not any major differences from 2003 to 2004 so I would go by what the best deal you find within your budget...
Whatever E you choose, know that you are getting tough reliable and versatile vehicle that is great in whatever lifestyle you lead.