We like the 3725RL because of its balance. I am 6'4" tall and weigh 275#. DW is 5'0" tall and weighs 99#. She needs to be able to reach everything and I need to fit.
The bedroom is a nice size where you can easily get dressed. A big night stand for the CPAP machine and a KING size bed. Large closet to hold all the clothes and a hamper. Large 32" TV and room for the DVD and DirecTV box on top of the dresser and not taking up dresser or cupboard space. Bed is low so you sit on it and get dressed.
The bathroom is LARGE. Nice size counter and a tub for the little DW only. Yea, I have to bend down to use the sink and the DW fits perfect. I can use the seat in the shower and actually wash my legs and feet. WooHoo. The toilet is not confined between two walls if you know what I mean.
The hallway is a bonus. Large linen closet and room for a side-by-side washer and dryer with room above the units for short DW clothes and stuff. Large hallway for big people to move around, just watch your head entering the bedroom or bath if your as tall as me.
The kitchen has more room than any other RV that we have owned. The pantry is huge and the counter space is adequate. Big coat closet for shoes, jackets, and dog leashes and stuff.
The living/dining room is the best feature. #1 Priority for us: Being able to sit in a recliner, two of the four dining room chairs, sofa, or while in the kitchen and DIRECTLY face the TV. This is the most comfortable setup. Four guys, the same size as me, could all sit at the dining room table with room to spare. With three adults and 5 dogs, we have plenty of space. The quiet A/C and LEDs are OUTSTANDING. We have everything in our new RV that we had in our 3750FL and all of the cupboards above the sofa, recliners, and dining room table are still empty.
Two outside storage compartments and on the 2013, a sewer compartment. Also, a 19' awning. We believe that even though the 3725RL only has 3 slides, they are big, and I mean big slides. We also believe that there is more square footage in this model than any other current Montana model. Just compare the floorplans. Almost the entire street side is a slide. Pulls like a dream and no problems to date.
Not for all, but best for us. Good luck and sorry for the rant.