Well, Glass Jars lined on the shelf are great. You can see the beautiful spices and herbs through the glass making it easy to find. Tins on a magnet strip....Yuck!! I mean it is a little more modern but yuck. And keeping the herbs/spices in darkness will help them keep a little longer, but I think glass jars lined up is much more feminine and will say so subconsciously.
I greatly prefer the jars.