Unless I'm reading wrong... you think Spears & Munsil is a waste of money, but Disney WoW isn't? Care to elaborate? Personally I think Spears & Munsil is the better disc as it offers more advanced patterns for real calibrations (grayscale and color gamut), on top of the basic patterns for Brightness, Contrast, Color/Tint and Sharpness. Disney WoW is a consumer level disc that only offers basic patterns. For advanced calibration you need a meter, so if you don't have one, either of them will be fine for the basic controls. Even the free AVS HD 709 disc will suffice, but don't expect it to walk you through everything like WoW or Spears & Munsil... you'll have to read the patterns manual and learn yourself.
Anyway, to answer the OP question, the ST60 is better than the ST50 in every way, except input lag. The ST60, especially after calibration, has noticeably better picture quality. It's not dramatically different, but noticeable. If input lag bothers you or you can find a larger or heavily discounted model, the ST50 is still a fine choice. If you just want the better performing set, the ST60 is better. Coming from a 60ST50 owner.
Edited by rahzel - 5/28/13 at 1:26am