I've been to both DL and WDW this past year...and this is a really tough call for me! I like both of them, for different reasons, but in the end I went with Magic Kingdom. Here are some breakdowns of my thought process
- Splash Mountain is MUCH better at WDW in my opinion..not only is a longer ride, but the one in DL seems to "float" faster. You don't seem to have as much time to slowly float and view all the stuff in the logs at DL, and I like the side-by-side seating in the WDW ride better than the single seats at DL.
- I also liked that Splash Mtn and BTMR are next door to each other in WDW. These were 2 of my son's favorite rides and we had the best time riding them over and over again during the parades/fireworks when there were no lines. Since they are spread apart from each other at DL that's not an option there.
- One thing that I LOVE about DL, and really missed in the Magic Kingdom is New Orleans Square. I really like that area and Liberty Square just isn't a substitute.
- POTC is better at DL hands down
- The castle at Magic Kingdom rules! I'm all for bigger, more peaks, etc.
- DL IS more doable than WDW. I DO like it that there is less walking and you feel like you can do more in a day there than Magic Kingdom (not that you really can it just feels that way

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- I preferred Mickey's Country Fair to DL's Toon Town, probably because there was better shopping
- One of our favorites at DL is the Matterhorn...no substitute at Magic Kingdom
- No Mickey's Philharmagic at DL
- I like the outside of DL's Haunted Mansion (the building itself) better than the WDW version, but WDW has a much better cemetary area than DL's, overall this is probably a draw between the two
- I prefer DL's Fantasyland area....WDW's just seemed too straight and narrow for some reason, DL's feels bigger and more rounded (i.e. it feels more like a land instead of a strip)
- DL's railroad is better, I was shocked that WDW's railroad doesn't allow you to stop at all the different parts of the park like DL's does!!
OK, I guess I'll stop now!

As stated above, overall if forced to choose I pick Magic Kingdom over DL, BUT I still have wonderful times on our trips to DL and for us since DL is so much closer and cheaper we'll definitely have vacations there.
One last story...after going to WDW I thought I might not enjoy DL quite so much when we went in October...I was WRONG. I had forgotten, the magic still lives there. Sure, the park isn't as big, our ultimate fav Splash Mtn isn't the same, but there's still MAGIC!
We enjoy the intimacy of the DL parks...I can't put it into words just right, but the ability to quickly walk from our hotel room to the entrance of either park at DL and also the feeling that we accomplish so much in our 4 or 5 days there (WDW is so much bigger that I just don't ever get that "completness" feeling...not that I'm really complaining about that loudly mind heh heh heh).
If I had a choice and money was no object? Yes, I'd go to WDW most of our vacations, but for us this isn't an option so we'll enjoy both places...and try to remember after our giant, big WDW vacation that we still love our 2nd favorite vacation spot DL
