The only trouble with the Championship is that the reward for winning is promotion to the Premiership.
In my opinion, it is more fun, more exciting, more of a level playing field and success is, at least, achievable.
The Premiership, for any club outside of the big 6, is a bit dull, the media have no interest, the refs are often biased (whether consciously or not) and the players are, in the main, tools.
That being said, I would not swap with the Dingles or the Vile. They would though, in a heartbeat!!