Definitely invisible, I feel like there would be endless possibilities of what you could do. Whereas reading minds you can..well read peoples minds. Of course you could do some things cool based on what you learned I suppose.
nailed it. you would know what everyone thought about you and as a result you would try to change your imperfections. this would further result in you getting really depressed and you would change everything that defined you as you.
reading minds might help a shit ton of aspects of life and earn you a shit ton of money, but if you couldnt turn it off you'd go insane. and frankly i hear people's stupid ass thoughts too much as is, if i had to listen to the idiots' thoughts around me nonstop i think i'd punch someone
that whole "if you couldnt turn it off you'd go crazy" argument is invalid because it applies to both cases. lets say you're invisible and you cant ever turn it off, you'll never be able to have any sort of communication with anyone ever again, you would get depressed and eventually kill yourself