Since I am pushing 70, detector weight has become a greater issue. I had trouble seeing the CTX's screen in sunny conditions (and some dang small text too). I was an early fan of the 'Nox and after a year or so sold my CTX and bought Deus/ORX as a backup unit. I also was one of the first Tarsacci users (beta tester) and kept my MDT 8000 so I am pretty well fixed with newest and lightest units.