I just rode Ortega on Sunday... it was a little intimidating, I rode at or below the posted speed limit and still got the butterflies a few times from the blind corners. The worst was on the ride home and the canyon winds were blowing pretty bad and I was being pushed across the road :-\
Anyways, this is the first time I went up... was really unsure of how fast to take the corners so I just followed the posted speed limit.
http://contour.com/stories/ortega-03062011