I am a Powell user. I love mine (704C, 766). I have fished the Dobyns Savvy and they do seem to balance a little better (especially the 7' MH) and look really great.
The actual performance differences between the Powell and the Savvy are pretty minimal as far as I could tell. I don't think the Powell rods are crazily unbalanced and they definitely balance out with the correct reel. I don't feel like I am ever fighting either of my Powell's.
It may all come down to your aesthetic tastes. Powell offers a minimalist rod while the Dobyns Savvy rods implement a flashier design.
As far as the actions of the Powell, I prefer those extra fast actions for all of my contact bait fishing. It seems to make the rod a lot more responsive between feeling the bite and driving the hook home.
They are both really great buys for their price point and I don't think you will be disappointed by either rod.