I have to jump in on this, only because I just experienced it....I just did DL for the first time in October and was SO excited for the halloween party, I was expecting it to blow WDW out of the water. I have to say, as much as I love DL, WDW Halloween kills DL's. The parks are similarly decorated. The parade wasn't nearly as good and the park was ridiculously crowded--we (myself and my bff, both mid 20's females) went on 2 rides, we couldn't enjoy ourselves and it wasn't even that close to Halloween..I didn't see any characters. The fireworks were great (similar to WDW but they have a flying Zero and is hosted by Jack which is awesome) and SM Ghost Galay was pretty cool but would I go again that time of year? Probably not, only for HMH, probably wouldn't do the halloween party again. Maybe I had a not so pleasant experience because it wasn't at DCA, I'm not sure. WDW however...there's the food and wine fest at the same time, which I think by itself is enough of a reason to go to WDW in the fall. October for me is my favorite time to do WDW for those two reasons.
(Disclaimer: I am not one of those "WDW is better than DL" people and I'm sorry if I offended anybody
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