If you like iris's you will love Iris Pallida 'Argentea Variegata'. Why? Well, it's foliage is variegated. And the smell is like heaven. It smells like Grape Soda or Grape Kool-Aid. Seriously!! It is on the small side so it can go closer to the front of a border where it's beauty and scent can be fully appreciated. It's got it all going on.
I consider mine one of the best plant scores ever. I love it.