"good" software is a strong word for a software that holds the freeware-3dtool-monopoly: there are no real alternatives for blender in the freeware section. i'm no fan of blender, if you can afford it, try a mid-cost 3d package like c4d (€800), lightwave ($900), truespace (now on sale for $395, otherwise around $600). programs that i would exclude from the list of "good" animation software are milkshape, caracterFX, pacemaker, fragmotion and gamespace.