Rhododendron canescens - for the fragrance and overall good form.

Rhododendron prunifolium - for the striking late blooms (mine is blooming now).

Rhododendron maximum - for the foliage (I like the blooms too).

For a list of the favorites of people in each part of the country, visit the American Rhododendron Societies Proven Performers lists:

Here is a link that might be useful: ARS Proven Performers Lists

Thanks for the link and your faves! :) I appreciate it. :)