I have a 2016 Jayco Pinnacle 38FLSA and we absolutely love it. This is our second RV. The first was a 35' Layton TT and we had zero issues with it. We are hoping the Pinnacle is our last RV purchase. We chose the Pinnacle because we wanted the front living floorplan and we found the Pinnacle layout met our needs the best. One thing to consider with the newer FW's vs the older ones is all the bells and whistles that are put in these rigs now. When I think that I started camping in a 2-man pup tent and now I'm in a 42' FW with a full size shower, residential fridge with ice maker, satellite tv, and a fireplace; wow how camping has changed! It is literally a house on wheels. I have to say we are extremely happy with our choice. You sound like seasoned campers. I'm sure if you take your time, research what you want and do a thorough PDI, you will be happy with whatever you upgrade to.
Good luck!