I don't recall ever hearing of a "Sensation" mower. LawnBoy was my first choice for walk behind mowers when they were 2-cycle engines made by OMC (Outboard Marine Corporation). In more recent times, LawnBoy was bought out by Toro. I suppose there are some differences between them, but basically, it seems to me that the current crop of LawnBoys are simply green Toros with either Honda or Tecumseh engines. Of course that's not necessarily a bad thing. I currently own a top of the line Toro self-propelled walk behind with a Briggs & Stratton engine and am so far happy with it. And one of my daughters has a Tecumseh powered LawnBoy that's at least 8 years old and still going strong.