Update 11/12/2013: Moved this to CodePlex – CleanMasterPages.CodePlex.com
This is a creation / compilation of the v4.master page which I use when branding a site that requires more of a SharePoint look where as sometimes the Starter Master Page takes away too much.
This master page contains everything V4 contains plus comments compiled from online blogs/articles, and ending comments to find the closing tags more easily. If you’re new to Master Pages then it may be worthwhile to take a look at this as its more cleanly indented and the descriptions could be of some value in learning.