Hi there WarrenM,
You might find these threads of mine from last year of interest:
http://www.ozhonda.com/forum/showthr...peaker-upgrade
http://www.ozhonda.com/forum/showthr...cessor-upgrade
This may be overkill for what you are wanting to spend, but if you are looking for a system to play largely Classical or Orchestral music styles then the standard Panasonic based system in the Accord CU2 leaves a LOT to be desired. I personally found the standard system to be far too bright and harsh and completely lacked warmth and decent bass. The equalisation is just all wrong, at least to my ears, and the factory all plastic speakers are just rubbish. In fact many users, including many here on OzHonda have had the standard speakers fail, many times!
My system is now based on all Focal speakers and 4 channel amplifier, with a Rockford Fosgate DSP to 'fix' the dreadful EQ of the standard system. I did not want to go the the extent of changing the factory Head Unit, and there are little to no options in that area anyway. It's a big job, but the result is well worth it if you love your music.
Cheers, and good luck.