Forsythia is a sunny, beautiful plant. If you dig it up, you will not only lose the vibrant, yellow flowers, you will also lose the elegant, trailing foliage which turns to a fabulous maroon shade in the autumn. Great for harvest festival flower pedestals. The leaves are a perfect foil for the orange and golds of autumn flowers.
Chimonanthus is only useful for winter scent. The rest of the time it looks ill. I am just about to dig it up and plant something with more than one season of interest.
Wouldn't do for us all to be alike, would it?