I'm interested in some feedback from other travelers regarding the various major interstate routes across the Great Plains/Central States:

* I-10 across Texas

* I-40/Route 66 across Oklahoma/Texas panhandle

* I-70 through Kansas

* I-80 across Nebraska

* I-90 through South Dakota

* I-94 across North Dakota

Which would be the most scenic? Least scenic? Overrated/underrated?
Easiest to drive/most tiresome?
Most/least interesting for attractions?

I have some opinions of my own, but would like to hear some comments and comparisons from others.