I believe that you probably are thinking of the
RV Consumer Group. They do ratings of RVs by make and model and as well as a lot of educational information about evaluating RVs. They are the only group who do RV evaluations who do not accept advertising from the companies that build the RVs. They are well known for being pretty tough on the manufacturers and they are sometime accused of bias, but never have I heard them accused of being too easy. I used their information when we bought our present motorhome and we have now owned it for seven years, almost six of them as fulltimers and we have been quite pleased with what they pointed us to. It will cost you some money to join, but the education and support in your search could very well save you thousands!