Make up your mind or...

I suspect either would be correct. It's hard to tell sometimes with weird idioms like this, even for a native speaker like me. Somehow the first one seems less awkward to my ear, though. What does everyone else think?

what? You didn't give a choice. Maybe you wanted to say you should make your mind up.

The choice was between the subject heading and the content of the post. "Make up or mind" or "make your mind up."
But yeah, that confused me too for a minute or so.

Have you made up your mind, then?

No. I am still vascillating.
(Maybe I should quit with the vascillating and go to bed, since it's nearly five in the morning. Why do I always do this??? I suck.)

Both can be used without any problem......though I'm still making my mind up about it!

I can't make my mind up. Why is it that I can't make up my mind wether to use "make up my mind" or "make my mind up," which is really making my mind to go up in a state of confusion.

Oh nooo! You begin to sound like me. Any help needed?

in my mind's eye (or perhaps my mind's ear rather), i would make the following distinction: as an expression, i would say "you need to make up your mind"... as an imperative, i would also use the same. however, if the expression is followed by an infinitive, the other sounds better to me: e.g. he made his mind up TO GO to the party after all. perhaps the debate on this topic greatly depends on

and I can't make out what you are saying.