For a one time panic stop, not much difference between my 10" all drum Dart and my 10" rear, front 73 up disc Dart. With the front disc car you can modulate a little better and its not as temperamental in stop and go traffic. Once drums get heated up they can not stop well and get grabby.

Discs are definitely the way to go if you're going to drive the car or if your drums are in bad shape, better to go ahead and put a disc setup on than put money into the drums.