I like the old one better. In Mint 9, where I'm running KDE4, I made a copy of the icon at /usr/share/icons/hicolor/scalable/apps/chromium-browser.svg so I could use it in some other distros where I already have a newer Chromium version.
Also, found a set of old Google Chrome .png images at http://www.iconspedia.com/icon/google-c ... 166-5.html
I don't know why, but the "new" 2D icons for either of those browsers don't appeal to me.
Gotta love Linux -- you can always change these things!