Finally today, after much reluctance in the past weeks, I have decided to adopt Visual Studio 2012 as the development environment for all my Visual Studio solutions, and I have just migrated them. I still find the default Light theme unpalatable but the Visual Studio 2012 Color Theme Editor extension provides much more pleasant themes and you can even switch themes with a couple of clicks.
What prompted me to the move was that Packt Publishing gave me a copy of the book Visual Studio 2012 Cookbook of fellow MVP Richard Banks to write a review and after reading the first chapter about the new IDE enhancements in the Solution Explorer and Tab Well I realized they were too good to miss the opportunity to use them on a daily basis.