Go for Panasonic's AG-HMC150. We've got 2 of them, and shoot around 30 weddings a year with them! It's basically the exact same thing (lens, CCD sensors) as the previously recommended 170, but it's $800 cheaper and shoots onto SD cards rather than P2. You'll save a lot of money with the easier/cheaper recording medium and still get the same quality image.
http://www.bhphotovideo.com/c/product/575992-REG/Panasonic_AG_HMC150PJU_AG_...