I agree that at first, Darlene was terribly annoying. But I think that was because of some serious personality clashes and a lot of pressure on her - and indeed you could see some resurgance of that as Tom rejoined her team.
But over time she has gotten MUCH better to the point where I find any remaining personailty flaws far less annoying than other contetstants. I agree Mitch has some talent but it's back by an over-large Ego - I though Darlene has a reasonable amount of ego in comparison.
I am not sure who is best in all-around tasks between Mitch and Darlene, but I can say that's a battle I would have relished and given props to the winner whichever way it fell. As it stands now though the remaining contest is a sham.
One last note is that even though Mitch has some good talents, his personaility is such that I don't think I could watch a show with him, where I was feeling like possibly I could have watched a show with Darlene if she turned down the perkyness just a notch. But you need the kind of energy she had I feel to run a TV show.
Us Darlene supprters realize she has her flaws, but are mostly angry she was backstabbed. And the real travesty is that the show does not get enough viewership to probably mean anything will come of the injustice, I just hope what Darlene has done so far opens up some doors for her somewhere.