I use Ate Super Blue Racing brake fluid in all my bikes, cars, and race car.
I use it in the race car because it has one of the highest dry boiling points of any readily available reasonably priced Dot 4 brake fluids.
But I use it in the bikes and cars because it has the highest WET boiling point.
Wet boiling point is the reason that you must change brake fluid so often. Brake fluid is hydroscopic, meaning it absorbs water. Water boils at 212 degrees. Moisture in brake fluid dramatically reduces the boiling point of the fluid. A higher wet boiling point is a higher margin of safety in fluid that is approaching (or past) its change interval. Ate suggests a longer change interval because of the extra margin.
The other reason I like this fluid is because they make an identical fluid in amber color called Type 200. When you do changes you alternate between the blue and the amber. That way you know when you have completely flushed the system.
It is available at many auto parts store (though some may have to special order the type 200).