The difference between the 5 Star and the KLR is that the KLR is a competition yoyo, whereas the 5 Star is not. A competition yoyo is pretty much a wider throw, with a low wall, and more angular than a organic (rounded) throw. Now, yoyo designs are geared more towards competition, making the KLR a top of the line performance yoyo and the 5 Star a more “fun” throw. Don’t get me wrong, the 5 star is super good, I love mine a bunch, but in terms of play the KLR is so much better.
In my opinion the KLR is worlds better than the 5 Star, it’s much more solid feeling and geared for competition and complex tricks. I love mine so much I got another one and I wouldn’t trade either them away for any other yoyo… (well… except a Peak haha)