I'll be racing in a few months and I am running a set of Panaracer Fire XC Pro's right now but it's starting to wear down. I am looking for a new set of tires. Should I go with IRC Mibro or Mythos XC. I want something that will roll faster than the Fire XC's, which I think both would be. I have ridden a mythos xc before and it does excel faster. Some people have told me Mibro is even better. Can anyone please give me your opinion about the two tires in terms of durability and performance? Would running a combination of mibro and mythos be a good choice too?