All the little crap adds up. I love it. ill take dx 10 and a 5-10fps drop over dx9 anyday.
as far as dx10 in moving game play Smoke tends to handle Way more realistically. and many people say whatever no biggie but I love that 'godray' thing as well. it rocks in WiC as well.
hrmmm my high quality looks better than the high quality in this photo w/ xp... that ultra high quality trick really works.. though i won't say it matches exactly w/ dx10 photo.. but it is pretty close
and agreed w/ many others.. to gamers.. or people who buy high end parts.. it is beyond easy to tell the difference