Any and all RV manufacturers turn out good and bad units. The big 3 I always consider to be Jayco, FR, and Keystone and all 3 seem to have about the same number of problems. You'll always get the one yahoo with a bad unit who loves to tell his story. RVs are a roll of the dice.
My last unit was a Salem (FR) and it way okay. I had a few problems fixed under warranty and then everything was mostly okay. I went with a Keystone now because of the floor plan, price and availability.
As for the number of brands within FR, yeah there are a lot. It mainly just makes it hard to look at models on the website. Without a doubt the floor plan you find that you like is only made on the opposite side of the country from where you are.