Cinema 4D (SE 5, at least) has been given away free on magazine CD's...at least PC Format, and it's great for doing morphs so long as you don't mind fiddling a bit to do import and export using 3rd-party filters (the built-in filter doesn't change the number of vertices, but does seem to re-order them... which can cause some extremely odd results when brought back into Poser!). I must try wings...