We too have found the Blacks releases the only way to go for Walleye on our riggers. You can adjust them down for the light bite. There are some cheaper Blacks knock offs that work OK, but if in doubt stick with blacks.

We also have stuck with braid for our riggers. Not so much to show a light bite as the little 10 inchers don't do anything but drag along. We mainly use braid just to keep everything the same. We buy the large spools of 30# braid and just use it for everything. It comes in handy when you get hammered by a big farm animal in the shallow Western basin.