One thing to look for if you don't want slides is what they call a "split bathroom". It opens up the coach like nobody's business!!
I am always getting comments from fellow RV'ers and 'many' with big Class A's how much room my MH has. Most coaches that have the side bathroom, the bathroom is so small you can't move AND it creates a long dark hallway in the coach or in some a complete wall with the hallway on the side. Making the front of the coach enclosed and small even on a 40 footer!!.
On the split bath there is a pocket door from the kitchen to bath and a folding door from bath to bedroom for privacy. When these 2 are open it really creates a big open feel from the front all the way to the back of the coach AND all the light that comes into it. Not to mention all the room in the bathroom area!! :)