This is the best one I've tried, too. I like that it's enteric coated so all are delivered live to the intestines. And the Optima formula has the salivarius strain, which is hard to find.
You should try Odor Cleanse from http://www.betterlife.com
too. This is the mushroom extract Champex, researched for 10 years in Japan that removes the odor from toxins that are a by-product of digestion. I'm going to start a thread for it separately.