i much prefer discs
i find they stop about the same as good rim brakes in the dry
and considerably better in the wet
and they don't wear down your rims
and they are not affected by rim straightness

i have never had a tire overheat or blow off on a long descent
but that is another point for discs in my opinion

however
with the exception of chrome steel rims in the wet
rim brakes have always worked more than adequately for me