I have to disagree about their Warner Bros. material. There are some good recordings to be found there, but after the first couple of years, it seemed to be a searching struggle to find a pop hit. Part of this was due to the fact that they parted ways with Wesley Rose as their manager and he refused to let them record any Acuff-Rose published songs, including their own songs, since they were under contract to Acuff-Rose.
For me, their Cadence recordings are the best, and I realize that it's just a personal choice. Differences of opinions (especially about music) can be good things, and I respect your opinion on this, even if I disagree.