Between the 610-2 3" 10mm and the 625-7 3" 45 long Colt, which one do you think would be considered the rarest? Standard Catalog of S&W lists 300 made for the 610-2 3" and 150 or 200 made for the 625-7 3" depending on where you look in the book. What about values for these? Thank you for your input and opinions...