Any recommendations on a updated blank/starter theme framework?

Does anyone have any recommendations on a good blank/starter theme framework? I have used Chris Coyier's and an adapted form of it. Any others on the top of your list?

I have seen the ones on the codex at: http://codex.wordpress.org/Theme_Frameworks, but am curious if you know of others? I want something without too many options, something very simple yet up-to-date, either free or premium. Thanks!