Having two cars done and driving them both I get your dilemma. My Satellite gets driven anywhere and everywhere. Its no where near stock and I have radials on it.
The Dart gets driven locally to a show here and there but not near the miles as the Satellite. I have bias on it. You do have to pay a little more attention to the road with the bias as occasionally it will find a seam in the road it wants to follow.
I like the nostalgia look the bias ply tires add to the Dart, but I'm not sure I would give up my radials for all around driving.
In the end its yours...