For morphing Hex is very good (and now free) and Silo is also good. Blender can also do nice morphs. Anything that has soft selections (and all three do, but Blender calls it's soft selection "Proportional editing". And then there's always Poser's morph tool ;). Sculptris can be used also. And Blender has a sculpting feature.

Of all the above, Silo is the only one that's not free.

Wings would not be good for this since the last time I used the magnet tool anyway, it subdivides the parts being sculpted, sort of like Zbrush and Sculptris do when sculpting. I think you can turn that off in those programs tho, but not in Wings.

Laurie