We recently purchased a new TT to replace our old (owned for 11 years). Family of 4, with 9 and 12 year old girls. The previous layout was a total 26' in length, no slide out, had a queen bed in front, a dinette on one side, and a jackknife couch on the other with the kitchen near the rear and the bathroom in the far back. It was a perfect layout till date. Space inside was tight, but the couch was a great space for enjoying coffee in the morning or just a place to sit (and quite comfortable). When looking for a new trailer, we wanted a bunkhouse in the same length, with a slide out, and a couch. We just couldn't find one (a quality one) with the specs we wanted. Anything with the layout we wanted was a couple feet longer, and anything in the length we wanted didn't have the couch. The closest we came was a Jayco (I think Jayflight) that was about 27' and had a Murphy bed that converted to a couch in the front. The downside to that trailer was that there was very little storage inside and out. I nixed it based on outside storage, and my DW felt the same inside. We didn't have weight restrictions due to a bigger TV.
Being in a bit of time crunch on purchasing, we opted to go with an Outdoors RV 21DBS. It's slightly less than 26' with a HUGE dinette. No couch. The kids love the bunks, we love the space and size of the dinette, but do wish we still had a couch. That was the one thing we sacrificed, but are still happy with the purchase. The first trip out a few weeks ago was a rainy start and we spent some time in the trailer during the day. the kids stayed in their bunks (very spacious on this model) and the DW and I either sat at the dinette near the window or laid in bed reading.
Will be testing the layout on a Yellowstone trip with friends later in the summer, so will see how we feel about traveling with friends and not having a couch to sit and visit on. Previous trips, occasionally people would come in and sit down, but not often, so not a justifier for having to absolutely have a couch.
For what that story is worth. Good luck on your decision!