The pipes I've used are the V&H Ovals for a HD touring model.
They do drone a bit when low speed cruising, but sound great when accelerating and cruising over 45 mph.
They were free as the baffles were damaged. Just ripped them out! I would say with baffles in would sounds perfect.
Here's a couple of pictures of the pipes as requested.
The RH one fit pretty easy. Just needed the mesh insert from the stock pipe to fit nice and snug. The LH pipe was a pain. I had to cut the elbow from the old stock pipe and weld it onto the V&H.