I support a dark horse: Hash Animation: Master. It's not an all-in-one solution for low-poly modelers, but the animation stuff in it is a close rival to Maya and the modeling part is incredibly intuitive once you get your head around it. I've tried a lot of modelers and I just can't turn out anything nearly as good as I can with A:M.
Its file export leaves a LOT to be desired, though. I've toyed with the idea of writing a B3D exporter but nothing's really gelled yet.
Its file export leaves a LOT to be desired, though. I've toyed with the idea of writing a B3D exporter but nothing's really gelled yet.