Hugh Howey has created quite a stir.
Both are worth a read.
Then have a careful think. With publishers actually doing less and less for authors and expected us to do most of the marketing effort anyway, just what are we getting for the money and control we give them? And yes, we are giving them money. There are still good reasons to go with a mainstream publisher, at least for some of your titles, but you need to be REALLY clear on what you are getting out of it.