I'll agree with many of the above posters and say that Earth (while weaker compared to what it seemed before) is by far the strongest stance. Water got nailed hardest. The dodge cap and AC loss for being in water compared to earth (pre U14 water had the highest AC potential) makes it really only good for bumping tactics.

The small tactics bump, while nice is just one thing, while earth has higher AC, better dps and the only source of innate PRR for monks. Earth is the complete package. The only reason I'm ever not in earth stance now is when I don't want to be stealing aggro and when I'm soloing, where air is more useful for the haste boost. I may play around with fire once I get the new monk set to see if it contributes to a self sufficiency package for solo play. Currently, water is just a trap stance until they do something to make it more appealing.