Here is my 2 cents... If buying a 2 door, I think there is little difference between the sport and rubi, lockers aside, you can get a set cheaper then you'll get with the rubicon label. If going for a 4 door or Jk unlimited, the Rubicon is the obvious choice. The added weight needs a beefier front axle, plus you get a slight lift and of course the lockers, 4:1 t-case, and edisco... The 2 door has ALWAYS been a capable off road vehicle, the short wheel base is the guts of the wrangler. The 4 door added variables that just don't add the same as a 2 door does. My general feeling is, a 4 door Rubicon and a 2 door sport are almost equal in terrain navigation, a 2 door rubicon is the most capable production vehicle on the planet!