Both are good fantasy.
I just recently re-read Midnight and Exiles and have the other Well World on the Nook if I can ever wrest it away from my wife.
I enjoyed those books as much now as I did when I first read them 30 years ago. I liked the 4 lords books also from Chalker.
As a more general comment on this list, there's some real crap on there.
Wicked??? Are you kidding me?
The Mars Trilogy from KSR????? Those books are a great concept that absolutely fails in execution. Pure snooze inducing garbage. It took me MONTHS to get through them and I burn A book a week normally and often one a day if i'm sick, snowed in or on vacation. I hated those books.
Dan Simmons Hyperion books definitely belong on the list as do all the Heinlein, Asimov, Clarke books listed.
I really love the Robin Hobb books despite, in general, not enjoying female authors as much. I like the cold hard edges you get from Niven. As an aside, I recently read Fallen Angels from Niven as listed up thread and consider it one of his much weaker works.
As others have stated, the Hammer's Slammers books are notably absent as is John Ringo but I'm not surprised that some NPR tofu eater wouldn't enjoy The Last Centurion or when the Slammers annihilate whatever is in their path :)