I had a Noah at one time for my race car, and it was *decent* at best. It could only take so much exposure to rain before it started absorbing it. Also it started stretching over time, and didn't keep its "custom fit".
The HD didn't scratch my car even after Hurricane Katrina beat up on it. That being said, I didn't drag the cover across my paint either. For removal, I would start at one end and roll it up. For putting it on, I would just do the opposite.
I think they are doing this automatically now, but the inside seams of the HD are a little rough. I contacted them about it, and they had me send it back to them to add a flanel lining over the seams. For my second and third HD's, I just requested this flanel lining at the time of purchase, and they added it at the factory for me, no charge. Even though the rough seams never scratched my car, I just didn't like the way they felt. Regardless, the lining solved the problem before it had a chance to start.