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It's nice to have more text than mark up. It may sometimes be difficult, but try to strive for that as an ideal.
We should not exaggerate the importance of those numbers, though. If the code is clean and if the important parts of the text are early in the file it does not really matter that the file perhaps is larger than it really needed to be.
I've read in numerous places the smaller the better and I’m sure it's correct, but it's difficult to make quality readable content by stuffing it with keywords every other word.
I think there should be a degree in content writing for search engines from Webmaster World University.
I know someone in this business who's site is litterally stuffed to the gills with repeated keywords and he seems to do very nicely. He only has a PR of 4 but is in the top 2 places in google for one of the most competitive keywords out there (albeit a country-wide search).
He might have a suprise coming if things are moving away from those techniques.