Surface Pro 2 vs Mac Mini + Surface 2

What would be a better setup? A Surface 2 and a Mac Mini, or a Surface Pro 2 with a dock? It's a subjective question, I know, but I'm just curious as to what your opinions are. And for what it's worth, both setups would cost about the same.

Surface 2 + Type Cover 2 = $680

Mac Mini + Monitor +Keyboard/Touchpad = $1000

Or

Surface Pro 2 + Type Cover 2 = $1030

Dock Connector + Monitor +Keyboard/Touchpad = $600

I'd say the only immediately obvious advantage would be that the Surface Pro 2, while docked, would double as a small, secondary screen.