My suggestion would be to spend some quality time watching Youtube reviews/walkthroughs. There are quite a few 18 and 19ft campers these days and best would be to get familiar with the floor plans, and then go to a dealer and actually check them out in person.
We spent about 3 years of researching, and it resulted in now having a great time when out & about in our little van. Incidentally, we bought a camper which had been used for 5000 miles and was almost new, thanks to someone who apparently did not spent quite as much time before the purchase.
__________________