Is the Surface Pro screen big enough to be a laptop replacement?

I'm looking for a new laptop to use in the next 6 months or so since my HP Envy is on its last legs. I, like many, am looking at the Surface Pro to replace that need. While I know the Surface Pro will be great for tablet use, I can't see how the desktop mode will be that great considering the screen is only 10.6 inches. I just want to know if anyone has owned a laptop with an 11 inch screen to know if they can reliably replace laptops that have 13+ inch screens.