hey wonderland im looking to go all rotary as well im running neotatvivace 3.5 long strokes for color and bng trying to find the best rotary for lining i know you said ur 4.2 vivace outlines well do you find the longer strokes outline faster? and what builder,and stroke lengths do u like for lining , shading, color packing the best right now if u dont mind me askin