We (50s) and kids (20s), prefer
DCL for the entertainment, choreographed dining experience, movie theater, and overall Disney vibe ("kids" still go to character meet/greets). Disney seems to focus more on the customer experience, and have better (more individualized) customer service. But, we just sailed Oasis and everyone loved it.
We also enjoy Celebrity, RCI, and Princess for couple-only sailing. For us, Voyager/Oasis+ ships or DCL works best for family cruising. With up to 6 cruising, we are also in the camp of "if we can get a deal, we'll sail DCL" now.