Keen is a great brand of shoe. Also SAS - did you know that stands for San Antonio Shoes? Made in the USA ! Clarks is a good brand and Born and Ecco. These are more expensive but they last much longer than inexpensive shoes and better for you. Rockport is great too.
I have had my Ecco sandles for at least 10 years. Use them lots, even on bus trips where one does lots of walking. Very comfortable.