for me, slope. throwing my tricks over those 75 foot wedges would make me shit my pants. however, I have raced a DH before, but only in ontario, which is incomparable to shit in the West or Europe. racing as a whole is a little scarier than slope, iv always been far more jittery starting a race than starting my run in a slope comp. this being said, the scariest shit is standing on top of a line in the back country.