Those are all good barrels, but if it's truly "all about accuracy" there are better choices.
Take a look at the custom, carbon fiber wrapped, barrels at ProofResearch.com
If you're interested, call them up. Mike Dagerness or Jeff Badelt will answer all your questions and help you build a custom barrel exactly for your needs.
If you want a barrel that will be accurate at the bench and light enough to hunt with, this is your best option.