You say you wouldn't pay a small fee for one site and then promote paying a fee on another site for even less information...
As for which site, we used nothing in May 2014 and went to every EMH. Crowds were actually not bad but it got exhausting doing all the late night into early morning transitions with DS.
In 2015 we used EasyWDW for Labor Day trip and felt like missing the morning EMH meant fewer rides before the crowds came.
This year we have 7 days, are going back in May and will likely try EasyWDW again only because we want to relax and the late night into early morning is not relaxing.