I've never been to WDW so I can't speak to that, but favorite is Space Mountain. I have heard others say that the DLR version is better than the WDW one, but I couldn't say that based on my own experience. I just know what I like at DLR.
Matterhorn, Indiana Jones, POTC at DL blows the pants off the one at WDW, SM at DL also blows the pants off the one at WDW. So in theory, they don't have those last 2 rides at WDW, because they are really different at DL.
Pirates of the Caribbean
Haunted Mansion
Space Mountain
Just about every ride that is in common between Disneyland and WDW is better at Disneyland, and this is from a long-time WDW fan who's only been to Disneyland once!
I love Pinocchio's Daring Journey. I love WDW but I feel Fantasyland at DL is more magical because of Pinocchio,Mr. toad, and Alice. I also love Indy, no matter how may times I ride I see something new.