Have a chance to pick up a Savage made fox in 16 gauge. 28" barrels and ejectors. I am unfamiliar with SP grade guns and cannot find much info regarding them. I compared pics on Fox web-site and I am confident that it is an SP grade. I have a couple of graded (AE) fox guns allready and was under the impression that the later savage made guns are less desirable than the early ones. What say the experts? Comparable prices to the sterlingworth? Thank you in advance for your input.