San J soy sauce is pretty awesome. It comes in low sodium and is available at a bunch of places. However, it usually starts at around $7....a little expensive for my blood.
So I have been looking into other brands of soy sauce. I have been told that "La Choy" offers gluten free soy sauce but is not great. (I think I saw it described online as pig sweat or something like that.) Recently on a trip to Dillions, Ashley and I found that Dillions brand soy sauce was also gluten free and crazy cheap....ridiculous cheap. Like $2 for a bottle. Sadly, you get what you pay for and I really don't like it. Ashley says it's fine but I think it is brown salt water with a bad smell and aftertaste. Yuck.
San J is still the winner. (I have found it at "Food for thought," "Whole Foods" and "Green Acres." in Wichita)