master travel trailer company name list?

I did all that. been to a few rv shows, lots of dealers. It just coming down to weight, and compromise or not compromise on certain things. Every time I sit down and look online though at floorplans I always find new companies or new models I've never seen before. I figure if I can just sit down and methodically do a Military style search, I can narrow it down, then go look at actual model and rule it out or in. I got roughly a year till buying ... I'm a slow mover. In my defense though this is a lot of money to buy one of these things I want to be sure before buying.