Josh, buying a mill has come up quite a few times before. There is a very good topic spanning a few pages discussing the alternatives, from a cheap Marga which you need to mod yourself, through the very efficient Barley Crusher and the top end Cadillac stuff of Fred's.
Depends on what you can afford, how long you can wait and are you happy with sending money overseas to unknown people.
Make sure you have a look at Stagger's gear, he makes mills for sale from time to time and they look bullet proof. Maybe you could put your name down for one of his.
Have a look at Sosman's mill. He made it from Jarrah and it is a fine example of craftsmanship.
I currently have a Barley Crusher, which does a great job. If I had a few dollars lying around, I would find it hard to select between a Stagger mill and an optioned mill from Fred.