Board Thread:Trading/@comment-201.191.112.181-20140420191835/@comment-556400-20140420211421

Well, the tipping points between Viracocha and Magician really are the stats as well as the far superior active skill. Yes, they are comparable and used in mostly the same situations. However, in F2P games, players really are trying to eke out every extra point of advantage they can, so Viracocha's extra 280 stats (200HP/20ATK/20SPD) are a big deal, and his active makes him far more valuable than Magician. Consider Lady of the Depths; if she didn't have that ridiculous active, she would be much less desired.

You are correct that there are both good and bad spirits. I would argue that there are no SRs that are even close to God of Water's disappointing level, and that there are extremely few rares that are equal in trade value to any non-God of Water SR, though.