I've been using these MOLOTOW acrylic markers for a while and they work very well.
The 1mm black is great for tracing key lines around inserts and has saved me tons of time with Frisket and airbrush. It dries nice and flat.
I've also tried a few other colors, but the black and white seem to be the most useful.
I have not gotten any bleeding at all with the black, but I did a test with red and blue and did notice some bleeding on heavier applications of clear. In future I would apply a thin coating to seal and then wait to do a heavier application.