I almost went for a EX and sprang for a DX because it was cheap. Looking for HX's here in Colorado is a bit hard, seems there are many other mpg minded drivers looking for them as well bringing the prices up.
I did want the EX but if I had I probably would have never found this site lol. The DX and it's long gear trans got me thinking, and a google search of civic dx mpg mods brought me here xD
Goodluck with the mpg hall of fame