You will notice a space difference even if you don't go much longer in length just because you don't have all the wasted engine room in the front. We moved from a 25 foot class c to a 30 foot class a and it is like we doubled in size! We have a Thor ACE and love it. Some pros for us were no more setting up taking down beds/tables as we now have a dedicated bed. And we don't have to climb a ladder to get into it. Much more convenient and accessible storage. Better layout for us. I would say do a lot of comparison shopping. Really compare floor plans, storage space, capacity of tanks, etc. If something seems to really fit you, you will know. Have fun!