We are traveling with 17 and 15 years old. We have stayed twice at Manchebo, which is next door to Bucuti, and have been extremely happy with it. The rooms have just been renovated but are probably 1 step down compared to Bucuti, but unlike other places we go to, we do not spend much time in the room on Aruba, so it is just fine. (And this statement actually only goes if you are used high end hotels, if not the rooms are above average). Manchebo is even further out on the beach itself compared to Bucuti. Unlike the high-rises you do not have a crowded beach, it it just beautiful there and pure sand floor in the water no coral stones.
So if your family mainly spend the time on the beach I would definately choose Manchebo.
If they want Las Vegas style hotels with All Inclusive and roam around a big hotel, choose the high-rises.
Have a great time in paradise.

Carsten