Follow your heart! I had a JKU Sport S and it was fantastic and I loved it and I never needed anything else. Now I have a JLUR and its great and I love it and I probably wont use most of what it has but it HAS it. If you can afford something its nice to have top of the line. Its completely a luxury for me to have the Rubicon but just like any other luxury its all about making yourself feel good and being happy. I've seen other people say it but it can't be more true. If you are that torn you're going to kick yourself for not going with the Rubicon. You'll probably love your Sport and I'm confident it'll do anything you ask of it but you'll side eye all those Rubi's you see running around and have just a little regret.