Welcome!
The search for the perfect RV will go on as long as there are RVs on the road. I agree that the best bet for you is either a large dealer representing many brands or an RV show. We shopped for three years trying to get that brand/value/features equation worked out. For us, layout was also a primary consideration. We don't need bunks, for instance. As we got more savvy with features, we narrowed the field of players considerably. The we walked into a unit, and bingo! We knew it was the right one.
We were at a show, and we got the "best price possible" from one dealer, walked to the other side of the show, and got $$ less than the first one, with some goodies thrown in (Rhinoflex sewer hose, flush wand, levelers, etc.).
Before we closed the deal, we came here and other RV sites to get reviews on our chosen TT. Like most products, it had good reviews and negative ones, but the good outweighed the bad, and we knew what to look out for.
We loved our TT, and it served us well for three years. We had many happy camping adventures with it. We are hoping the next family has many great camping adventures in it, and we never had a warranty issue.
All that being said, when you narrow it down, layout is important. Lay on the bed for a while, sit on the couch, pretend you're cooking, using the bathroom, etc. We don't watch much TV while camping, but it does rain, so make sure you can watch the TV without being a contortionist.
Most of all, when you pull the trigger and drive away, assure yourself that you made the right choice and don't second guess yourself. Many people change rigs every few years, and you can, too, if it isn't perfect. We learned a lot about what we liked, needed and can't live without, and also what we didn't need at all during our first year of camping, and you'll figure that out as you go along.
Most of all, have fun!
Elizabeth