Tack “&udm=14” on to the end of a normal search, and you’ll be booted into the clean 10 blue links interface. While Google might not let you set this as a default, if you have a way to automatically edit the Google search URL, you can create your own defaults.
Hmm, not for me for some reason.
Edit: looks like it depends on the search.
I dunno, I don’t use Google almost ever.