I'm surprised that no one has posted a reply yet.
I pesonally have limited experience with the Holo Sight, and no experience with the Red Dot. As such, it is for this reason that I have waiting for other people (who have experience with them both) to reply first. However, given that no one has yet to reply, I will do my best.
Again, my experience with the holo sight is very limited. On one gun it was mounted on a Taurus RB revolver in .454 and it held up great. The only thing that I didn't really like about it was that (if I remember correctly) the sighting point seemed to somewhat shift when you moved the gun. I was shooting at 25 yards and my shots grouped well (about 1" or so).
Zachary