Microsoft's Surface Pro: Sorry, H.P. - NYTimes.com

Check the article link for Surface/iPad feature comparisons; also note that the Surface for Windows RT will bundle Office (Office Home & Student 2013 RT) while Surface for Windows Pro won't

"Microsoft may have made an enterprise-grade machine to take on the iPad, but along the way it has built something with an Intel chip, a keyboard, a trackpad, touch, and a full suite of Microsoft software. That starts to look a lot like a laptop."

Microsoft's Surface Pro: Sorry, H.P. - NYTimes.com