Refurbished 15" MBP Retina. It's last year's model, so it doesn't have Haswell, but still has 7-hr battery life.
You still have the normal 1-year warranty with Apple refurbs, and you can purchase AppleCare if you wish to extend it to 3-years.
Refurbished 15.4-inch MacBook Pro 2.3GHz Quad-core Intel i7 with Retina Display - Apple Store (Canada)
Worst comes to worse, if you have to run Windows-specific programs, install Windows along with OSX.