FWIW....
On our first trip to WDW after buying into DVC (we bought in Summer 1997 and first trip was Spring 1998), DW and I had a studio at OKW.
It was fine, because we had no children and meal costs were not a concern.
Six months later, we adopted our first daughter (in China--IM if you have questions). A month or two later, we stayed in a 1BR and said "Never again!" to a studio. It was great being able to make meals in our room, thus saving on meal costs.
We now have a second daughter (also adopted in China) and now we know the pleasure of having a 2BR.
JMHO.....