One thing I forgot to mention—I only use low sodium, good quality soy sauce. While I am an admitted salt-a-holic, regular soy sauce is simply way too salty for me. Lower sodium, good quality soy sauce is divine, and well worth the extra pennies over the cheap grocery brands. We have a chinese restaurant distributor locally with a retail shop that sells all sorts of soy sauce brands not available in grocery stores. Makes a big difference.
I use House of Tsing low sodium.