Hello, Well I always use 3D Studio Max because its the best on e from those I have.
I tried Maya but is not easy to begin.
Anyway onece I used a very good, easy and powerfull software but unfortunatelly I couldnt find it again to use it, its name is Strata Studio Pro 2.53 (different from just Strata).
The are versions for MAC and PC, If you can get it I recomend you to use it.
Anyway if you are lookimg for a free 3d editor you can try Blender.