My brush settings for SAI.
I mainly use the size 8 brush and the stabilizer is set at 15.
Quick, light strokes are the trick for the majority of the time, along with lining at 200% and pressing the Ctrl+Z keys like no tomorrow.(No seriously, sometimes I press them 5-15 times for just one line if the line doesn’t look quite right)
Oh and, the tablet I use is a Wacom Bamboo Pen & Touch.