Seems worthless to mention this after the Anandtech review, but the Verge have followed-up their earlier rushed hack job, sorry, "review", with another one on the ATT version. HTC One for AT&T: the best Android phone yet? | The Verge
Different reviewer, slightly higher score and the reviewer was clear that he liked it a lot. People here still seem to get much better battery life than Verge reviewers though (comparing "daily use" rather than run-down tests, though the Verge don't actually say what they do with it when they say it lasts them through the day but not into the evening).
Minimal branding, but does contain annoying ATT crapware.