A little late now to mention but you should be aware of the UTQG rating. The higher the number the harder the tread compound. For the purposes of running darkside, you want that number to be as low as possible.
The Riken Raptor ZR that many of us use has a rating of 300. My first one lasted 29,000 miles.
The Yoko that y'all are discussing has a rating of 560. That's an awfully hard tire.
I finally had my Yokohama installed today.... I only have ridden it about 10 miles so far but I think I'm used to it already,the main difference I can tell I slow speed maneuvering, it's kinda weird how it stands the bike straight up..lol...Highway feels good, so far I think I've made a great decision to join THE DARK SIDE!!!