Forest River is an interesting company. They have 23 manufacturing plants in the US making many different models of RV's from Class A's, Class C's, TT's, A Frames', 5th wheels, shuttle buses, park models, and even pontoon boats. They are part of the Berkshire Hathaway conglomerate.
That being said, I don't think their quality is any better, nor any worse, than any other manufacturer out there. On my coach, I had no minor problems, only one MAJOR problem where someone forgot to seal my overhang completely and I had a bad leak. But, FR responded quickly and covered all my repairs and replacement of my entertainment center.
As others have said, go to their user forum and you can get a lot of information. Not only are there a lot of experienced RV'ers there but they can really help anyone with a problem. Plus, there are a couple of FR employees that come on the forum occasionally to give us good information and help people with repairs.