Most of the "free or buying poses" are not good for my work, because they have active morph channels, so applying a pose like e.g. sitting effects the face-expression (that's make me angry, if i'd worked out an expression before). I mostly (about 90%) work out my poses by myself from the zero-basis of a figure. Rarely i'm using a poseset - if it is not correctly done, it is impossible to fix. From zerobasis it is faster and more secure for me, to get the results, i've wanted.