I also used my new markers purchased to lighten my load in my bag yet still provide color to the sketchbook. They are Copic markers, with a little standard brush markers for flavor. Funny things is though, i haven't taken anything out of my bag, so it's not lighter. Now i just have 4 more markers added to it.
"You can take the girl out of the art store, but not the art store out of the girl!"