Great site! Although I would include Reulbach Glove Showing and Mike Powers as part of your short print list.
Also, I've noticed that the Sov. 150 for the 150 only series are incredibly tough to find. Even harder than Hindu. The Sov. 150 multiplier in IMO should be high for 150 only subjects.
It should be mentioned too that the back multipliers for certain cards like the Sov. 460 and Sov. 350 are really tough for the Super Print group as Ted discovered in his research.
http://www.net54baseball.com/showthread.php?t=124890