The best thing you can probably do is go visit different RV dealerships in your area and see what's currently trending in RV's.
Unfortunately, the differences between "entry level" and "mid level" and even "upper level" RV's is not that much different any more. Some brands still stand out, like AirStream. Some are a bit more qualified for 4 season, like Artic Fox.
Everyone will have their favorites, and we do too. We love our Outback. Why? Well, it's made aluminum framed, the walls are styrofoam filled, it has a walkable arched roof, has real wood cabinets. Although manufactured by Keystone and actually falls into their "middle" category, the appliances are the same in all of them, same windows, same furnaces, air conditioners, and even the water heater.
We've had 2 Keystone TT's now, and one Dutchmen. We've taken care of all 3 of them, and all 3 served well for the time we owned them. Our current Outback is by far the nicest of the 3.
To narrow down your search, you need to start with your floor plan, list your wants, and more important ... list your "do not want's". Then search the internet and visit dealerships so you can see the actual models and get a real feel.
Having owned a TT previously, you are not a green-horn. You are experienced. Use that experience to search out your next camper! And most important ... have fun doing it. Don't be overwhelmed! Just enjoy the journey!