I fully realize that quality means different things to different folks but I need a place to start.
Plus,as you already know, there is good and not so good in every line.
I would choose a floorplan that will work for your needs.
Then I would scroll through various Mfg's. that offer that floorplan. I would then read the owners forums to see which Mfg.'s step up to the plate to help those owners who have invested in their company when/if they need help with issues. That's the TT I would buy.
I have found that RV's at various quality levels can/do work well for the time I have owned them. They all depreciate quite fast so I would be careful of over spending.