Want imput on a switch, TT to 5th

I have had a bumper tow for many years with no issues. Dodge Diesel and Sunnybrook 26 CKS about 6400 UVW. I am thinking of making a change to a 5th for more storage and a better unit. Looking to keep the length <28 ft. If I do switch what will be the first differences that I notice, good and bad? Do they really tow better with less felt in truck? Sorry if this has been hashed out a thousand times.