You've just got to choose one (I guess the one that makes the most sense or sounds the most appealing to you) and try it. And try it for more than a week or two. It's a crapshoot, basically.
Status: Remission since late May 2009!
Symptoms began in November 2008, ~4 weeks after giving birth to my son.
Diagnosed with pancolitis on 1/30/09
Currently taking Apriso (4 pills ONCE!! daily), Rowasa twice weekly, Natural Factors Ultimate probiotic 12/12 Formula, and Zoloft (25 mg).