Galanthus nivalis is the only acceptable snowdrop for me. Native to UK and delicate in form. That bloody old elwesii thing is coarse and far too big. I don't like the Hyacinthoidus hispanica either. Same thing, too big and blowsy, and it's invading our woodlands at the expense of our native Hyacinthoides non-scripta. It even has the cheek to hybridise with our bluebells, and their offspring have no scent!