So, I just took the two "salary surveys" at Payscale.com and Salary.com; and they confirmed what my SAGE survey says every year:
I am paid in the 60th to 70th or so percentile for my position, responsibilities, area, and industry; and pretty much right in line with my education and experience level.
It means I've been reasonable and fair, but aggressive, in my pay negotiations; and that the results have been appropriate.
I feel like I'm paid about the right amount for what I do, and I'm happy with that.