Sounds like you may have already made your decision, but I'll dissent:
Disneyland!!!
I've been to both WDW and DL about the same number of times. Hate the shear amount of real estate, the lines, crowds, and now all of the planning involved with WDW.
The kids and I did DL in August 2017 and I have to say, it was our best vacation yet. For me: I chose DL because it's small, manageable, and doesn't require so much advanced planning. I developed health issues after cancer treatment (a few years back now), and now tire much more easily. I'll be walking along fine for a while and then boom, instantly tired. The kids told me I should get one of those
scooter things but I was determined to walk, to make it without. I loved having a room right across the street from DL. I could go back to the room when I got tired, rest, and return to the parks when I was ready. The boys (teenagers) could stay at the park if they wanted to and come back when they were ready. I loved not having to know what ride I was going to ride or where I was going to eat months in advance. The longest we waited in line for a ride was maybe 20-30 minutes. 5 minutes if we had a Fast Pass.
The biggest "con" to DL is the cost of airfare. I would think that Orlando would be much cheaper coming out of NY.