I didn't say I preferred DL over WDW, just the opposite actually, but it really was a wonderful surprise and I think shouldn't be overlooked if you are close by.
We visited DL in 2008 after Panama WB.
You really have to resist comparisons with WDW, however hard. We have been going to WDW since 1980 and this was our first trip to DL. Totally blown away, totally different experience. Will we fit in some days there next year? Oh yes!
Will it spoil our enjoyment of WDW - never.