I spoke with someone that tests tires for kumho today and asked him when the 710's would be ready. He said about 60 days. So I expecting Mid June. I asked what is going on and why they didn't have any trouble with the prototypes and he said they were just a bad batch. Whatever that means. Anyway with that being said I don't know how much longer I can wait? I might burn up my existing set by then. What would be the best preformance tire for Track Events HPDE4/Time Trials & some Autox for the money in size 205/50R15. A) Hooiser R3SO4 B) Hooiser R3SO3 C) Kumho Ecsta V700 D) Kumho Victoracer V700 E) Hankook Ventus 7211 F) Toyo Proxes RA1. I am willing to give up a little bit of speed for durability but like everyone I would like to get the fastest tire that lasts for the money. Also consider in the price the cost of shaving if the tire needs to be. I figure there may be a lot of you the same situation as I am and thought maybe this question would spur a usefull debate.