It's difficult to advise without knowing how much you want to spend, how long you want to go for, what ages your children are, when you want to go and whether you solely want to go to Disney or have big holiday.
If Disneyland is your main focus and you're thinking a short break then Paris would be ideal. They have great deals on at the moment.
With any of the big parks the top tip I would give you is to avoid the weekends if possible, the queues are at least twice as long as midweek.
If you're thinking a longer holiday and the kids would be ok on a longer flight then Florida or California would have plenty of options.
I haven't been to the one in Florida but have been to Paris, California and Hong Kong and the only one I'd say to skip is HK!