[spudd]

3m fine line is the only way to go
Comes in all sorts of widths and is made for two tone painting
I don't know how anyone can use the blue tape without bleed through as it's not designed for anything but latex paint
You are playing with fire if you use anything but automotiveasking tape.i have owned a bodyshop for 20 years and do alot of custom painting and it's not worth the risk of using cheap tape
Just my opinion