Softimage had a tool (the "M" tool because of its shortcut) that allowed you to slide verts, snap verts, and it was a softselect move tool with diameter all in one! It was fantastic for modeling and super quick to knock out shapes.
Softimage also had a fantastic way to select adjacent edges or adjacent polygons, Max seems to be very clunky with this.
Lastly, Softimage had a fantastic "crate polygon" tool which allowed you to draw a poly on a surface by using snap. In Max this seems like a long process to set up where it use to be two clicks in XSI.
