Thanks Mike.

All I plan on having in the car is our clothes/cooler/snacks and what not for the trip. We were going to break it up into 3 stints, and I don't want to crowd the cab of the moving truck anymore than I have to.

With that being said, I was weary of the dolly anyway and after some quick research, I have decided to switch to the carrier. Thank you.

But as for the original question, do you know which has more mountains/hills/elevation change? I've been advised to take 90 and avoid the Rockies and surrounding area like the plague, but I haven't found any solid evidence that it's going to be that different.

The overall difference in miles according to google maps is only 40 miles, with I 80 being the lesser, so I was thinking the less stress I put on the truck, the better my ride would be. Any thoughts?