This will be interesting. I recently made the switch from Maya to Max and I'm really disappointed - especially about the lies of faster modelling and more robust history (modifier stack). I have a friend who whines a lot about Maya and is considering switching to Modo, so this thread might be a nice read for him as well.
Well, there are some nice things about Blender that are much more of a pain to set up in Modo. Stuff like smoke simulation, high-performance rigs, responsive multires sculpting with eight million+ polygons, are all not really there in Modo. There's some other neat features in Blender like the grease pencil and the bevel…