The reality now is that the bright stainless guns get the highest prices by far followed by the matte stainless and then the blue. Most people who have the Eletroless nickel Pythons and are not original owners think they have matte stainless guns. I wanted to buy 2 different matte stainless Pythons and the guns turned out to be Electroless nickel. In both cases the owners were not the original owners and they did not have the original boxes. You can tell because the stainless pythons have a "S" inside the extractor housing under the barrel or under the star extractor and/or when you take the grips off there may be a "S" but it will be in one of these places.
As far as I am concerned a bright stainless, especially with white Ivory grips, looks awesome followed by matte or blue. I have no desire at all for the bright nickel guns as they can not be buffed out when scratched or worn and something like Hoppes #9 will lift the nickel off. That is the reason Colt stopped making the bright nickel guns when they came out with the way more durable bright stainless.