Which Sheraton Vistana Resort Unit is best?

We are trying to decide between the Fountains II, Lakes or Cascades. We have 3 small children and have a 2 bedroom reserved. We won't be spending a ton of time at the resort--as we will be at the parks for most of our vacation. Would like a somewhat quiet unit, as our youngest will be napping the afternoons. I know all of them have been remodeled, but out of the 3 is any one better than the other? Thanks.

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