I have been RV'ing since 1996. I have over 100k camping miles and WELL over 1200 camping nights in RVs. This past spring I purchased my third RV (this time new,) a 2019 Freedom Elite 23H which is the same as Four Winds 23U.
The floor plan I chose is very common and offered my basically every class c manufacturer. The difference with Thor in this floor plan was they had so much more storage. Basically a full basement. That's what steered us to Thor over the other brands that had basically the same floor plan for basically the same price.
I knew what I wanted as far as floor plan and this was it. Quality-wise I've had zero issues. I don't know why Thor is considered low quality online, I have nothing but positive comments about my rig. I have experience with other 2019 rigs including brands considered premium to Thor and my Thor is top quality in my experience. I can elaborate if you are interested. I love my Thor C.
I will even go a step further and say my experience purchasing at Camping World was great. CW also has a terrible online reputation and that is just not my experience at all. I have nothing but good to say.
Good luck in whatever you decide.