We just did our 1st DL trip last August after going to WDW 3x.
Although WDW still is #1 in our hearts we did love DL and we did have a great time!
Just go on the trip with the mindframe that they are two different parks! Too many people compare the parks and then are disappointed. They are not the same, although have a lot of the same rides.
My mom went with us on this trip and she was disappointed BUT she kept comparing the two parks. You do that you will be disappointed.
If given a choice I would choose WDW over DL, but if I could not make it to WDW but could go to DL I would not think twice.
With that being said, make sure to go on the Matterhorn (we LOVED it)! Space Mountain is AWESOME!!!!!
Just a little suggestion, if you can do an Early Morning and hit Fantasyland RIGHT AWAY!!!! We were able to do all of Fantasyland, except for the Snow White ride within that 1st hour. We hit Peter Pan, Dumbo and Mr. Toad's Wild Ride all with NO wait! We did it in that order and it worked out great. We then hit the less popular Fantasyland rides, Alice, Pinocchio, etc after we did the 3 popluar ones.
Once Early Morning was done, Fantasyland was PACKED

We stayed away from it.
Have fun!