There is a debate between Disney park enthusiasts. Which resort is best? Disney World is sprawling. It has its own mini highway system linking the parks. The castle is bigger and more impressive. But Disneyland is intimate. It sits right in the middle of Anaheim with little freeway fanfare. Disneyland is the only park where Walt walked.
At Disney World you would have to hit three separate parks to ride the best rides on offer, but at Disneyland you can get most of them in one go. (It’s been a few years since I’ve visited California Adventure, and I hear it has gotten better over the years. However, based on my experience, only Soarin’ Over California is worthy of a major mention.)