Those are very interesting points, Quiltnlady. I'll try to remember some of them.
For myself, I like to use two borders. The first one I like to make a narrow 1" border and the second I like to make about 4"-5", depending on the design. The quilt I am working on now has a 6" border. It's feels a bit big, so I am quilting feathers in it to make it look better, like it has less "negative space" as some people say. (But how space is negative is still beyond me!
)