Really is such a shame we didn't get Car Land. Really the only good parts of Cars Land are Radiator Springs Racers and Flo's V8 Cafe. But Car Land would've had RSR and likely its own diner. It also had the potential for nonCars rides such as Herbie the Love Bug or something akin to World of Motion. Cars Land's good, but Car Land could've been even better.
I prefer Cars Land by a mile personally. I was at that D 23 event where Lasseter laid out the the entire plan for CL and the different iterations it had before settling on the movie. They sounded fine but its more fun to walk into that film for me and I have never seen any of the films. But Radiator Springs has become iconic in itself which is what I like. And if you're a kid who grew up on those movies more so.
But I do think its interesting Disney plans to build more single move lands but so far the only ones that have been completely lifted from the films themselves have been CL and Pandora. Even GE is a completely new area just based around the films.