I've been buying an organic low fat plain yogurt at Trader Joe's that's really good! The kids even liked the Strawberry version of it. I get the plain stuff, sweeten it with some Splenda, then eat it with the granola that TJ's sells. It's vey good too.
They have great stuff in the store, and their prices are really good! The cereal we buy there is way less expensive than the regular grocery store, sometimes for the very same thing! We like the Uncle Sam's cereal because it has flaxseed. At Stop and Shop, it sells for about $3.50 a box; at TJ''s it's $1.99!
This is the only yogurt I have found at Walmart and Albertsons that is just plain yogurt with no thickeners. Even the Plain Yogurt that Dannon makes has thickeners...but this is called "Natural" plain yogurt and it's ingredients are "Cultured Grade A Milk." They have a low-fat version, but I prefer the jedis to eat the the whole milk one...especially Joshua...he needs to put on more weight!