I live on the east coast where it seems most homes are raised hardwood floor only upstairs (with the crawl spaces you are talking about), the downstairs seems to be concrete. I am thinking about this mostly for the spouse since he plays and prefer to listen (and sometimes sing along). I know he is picky about it and I get why, but when he plays my ears are just not that tuned in I guess as far as the sounds go. Now when I am watching a movie I totally get it.