I was thinking the same thing. Opinions will tend to be a little biased. I own both and have to admit I was drawn to the Python for it's looks. The full underlug with the vented rib has an awesome look to it. Pretty sure the 586 as well as the 686 was Smith's answer to the Python back in the...
It seems that from a collectors standpoint the early s/n guns are highly sought after. Must be in order to pay that kind of money. The seller must have had to pinch himself. :)