I considered the Surface Pro (I was looking at v3), but was put off by reports of overheating. For my intended use (mainly writing), I figured it was OK, but for anything more taxing than that - audio recording, for instance - I didn't want to take a chance, especially given the Surface Pro's relatively high price.
So I ended up getting a Lenovo Flex instead. It's worked out fine -- especially after replacing the standard magnetic drive with a solid state one.