I'd pick Superman's powers over Thor's. I won't need a hammer to fly, plus I would have superspeed to travel space (Ever seen Smallville), vibrate invisible and intangible, superstrength, invulnerability (No force on earth would kill me), and super senses (x-ray vision, soul vision, see the whole magnetic spectrum vision, microscope vision, telescope vision, super smelling, etc.)
Thor's powers are better for fighting, but in real life, there's no need for a hammer at all.