Rosedale has two courses. An upper course and a lower course (Called "Down Under") Upper is a great balanced course, some open, some wooded. Lower course is all wooded. shorter and more technical. Rosedale is also centrally located. Probably the most popular course because of it's location. Great course all around.
One of my favorites is Lakeside (Birdland): http://www.dgcoursereview.com/course.php?id=6062
Longer course, good elevation changes. Great mix of open and wooded. A bit of a drive depending on your location.
Classic and popular one is Swope Park: http://www.dgcoursereview.com/course.php?id=1890
. Also a good location but a shorter more open course.
If you like the cool courses I would recommend Wilbur Young (The Youngle) http://www.dgcoursereview.com/course.php?id=3956
Shorter but heavily wooded. Also a bit of a drive but a fun newer course.
Just my opinion. Hope that helps.