I posted a few pages back in this thread that I prefer Disney, but probably only by a little bit.
My biggest con is the planning. Not so much the
pre-planning of FP+'s and ADR's, but the planning required once you are actually there in the park to make sure you meet the requirements of that planning.
Although I really do prefer Disney, I don't think I will ever reserve another ADR again after we had a little incident the other day:
Our ADR at Chefs de France was in about 60 minutes, so we decided to go hit
Soarin'. So we stood in the line, which wasn't very long, and thought we would have plenty of time. But, for some reason, there was a long delay after we were seated of at least 10-15 minutes. I
REALLY didn't want to pay the "no-show" fee, so after waiting in line, then waiting on the seat on the ride, for a total of probably 40 minutes, we had to ask to be let off the ride, right before it finally started, and then had to run to make the ADR.
I don't know what we should have done in that situation - I guess our options were 1) Skip Soarin' before dinner (but then, again, we would have missed-out on park-time/ride-time due to ADR's), 2) Skip the ADR and waste $10, or 3) not have made the ADR in the first place and got counter service after Soarin' was over. In retrospect, rather than getting off the ride and running for our ADR, I should have done Option 3 - which is what we'll do from now on.
After that experience, I canceled our other ADR's, because I was there to see Disney World, not sit at a restaurant and try to fit things in around sitting at a restaurant.
Now, we were off-site and split time between Disney world and Universal, so between
Universal, CityWalk, and International Drive, we still had plenty of sit-down/table-service dinners, so this might be a different story if we had stayed on-site at Disney.
In short, I will probably not worry about ADR's again. Fastpasses are bad enough.
Again, I still prefer WDW, but if the strict planning gets even worse (somehow), then we will consider skipping it altogether and just going to UO.