Let the hive mind of Engadget get that for you.
"I'm in the market for a new laptop, and I want a 13-incher. I need something with a great keyboard for typing, as this will mostly be used for note taking in class. I am absolutely smitten with the XPS 13, but I'm afraid that with its age Dell is going to give it an update soon. Any advice for someone in my shoes?"
It's funny because during that same period the only people that were having problems logging in in my guild were people that HADN'T merged their account yet. This was like 4 months ago. I have never had a problem logging in with my Battle.net account.