As an operator having owned a Master Series, an EFP, a 3A, a Pilot, and a Flyer LE if I was to make a choice today (with budgetary concerns and the current crop of cameras used in production) I would look seriously look at the new Zephyr and the Archer2 if thinking of becoming a professional. Keep in mind you will need to keep some money set aside for a Wireless Follow focus system, Rods, bracketry, cables, a wireless video transmitter, plates, Velcro, down time between gigs (if necessary to pay the rent, lease, etc) a gym membership and your Chiropractors bills.
Mike