We looked at all the models for a long time before finally settling on a Lilly. One of the strong draws was the third bedroom (with closet). We stretched the garage 2 ft forward, added a golf cart garage (requires a wide lot) and stretched the lanai 4 ft. We have also added a large birdcage off the lanai. We do not have the stacked slider but find that the std sliding doors provide enough openness for us and our cats.
The reality is, we spend little time in the house with all the other things to do!
Good luck with your choices!