VisualMill is the best program i have worked with, in terms of surface finish, and i have worked with, ArtCam, DeskProto, Modela, RC, and quite few others not worth mentioning...
I work with its Rhino based variant called RhinoCam, and a great many cad packages out there that feature built in CAM are in fact sporting VisualMill as a plugin.
I am updating to RhinoCam2 in the next week or so and will be doing some free video tutorials for 3 and 4 axis jewellery applications using VM/RC2.
watch this space
