For the 25.2:
- It has a 6" longer wheelbase but the same overall length (with slide in) due to slide.
- One large closet (wardrobe)
- Maybe slightly larger shower (36" x 30")--at least rectangular vs square
- Seatbelts for 5
For the 25.3:
- More closet space (based on floorplan): 2 closets across from each other
- Looks like more counter space around the kitchen sink
- Less "family room" due to the dinette taking up more space
- Seatbelts for 4
Just looking at the floorplans...