Don't know where you heard there was a difference in sound insulation between the different Civic trim levels. That is news to me, nobody said a word about it at the offical launch or in any literature I have read.
As far as people paying $2 for the upgrades between DX-G and LX, there is more to it than just alloys and cruise. Also painted mirrors/door handles, outside temp. gauge, additional interior lights, variable speed intermittent wipers, and an upgrade fro 15" to 16" tire size. Not a screaming deal for those extras but decent value. Our problem will be DX-G supply between now and the Spring thanks to suplier problems (so they tell us).
EX is only $23K excluding freight/taxes, not $25K. That is only $300 more than last year's Si Sedan.