We recently went with the Standard Horizon/Sitex route after much deliberation (with the MDS-8 dome). Part of my decision was made by the fact that the Standard Horizon plotter had good base cartography. It is my first Radar unit and I have not actually used it in the fog, so I have no idea how it would compare to the Raymarine, Lowrance, or Garmin units. The Garmin plotter I had (and still have as a backup), will occasionally lose communication with the depth transducer (usually when I am trying to come into a shallow anchorage). I thought this would be a good chance to try another make. The SH unit also has better resolution on it's display than many even though the screen is itself smaller and easier to mount om my binnacle. I have no idea on the durability or really any of it's details compared with it's competition, but so far I like it. Keep in mind that the power requirements of the unit go up with it's power (thus my decision to stay with the MDS-8 over the MDS-9. 2kw vs. 4kw with close beam width. I don't know if this was the right call or not, but the trade off seamed worth it to me).