I still can't figure out why the best R Comps aren't available in North America but for some reason they're almost only available for us Down Under and Japan. The Yokohama AO50 is probably the quickest followed closely by the Hankook Z221. I'm sorta glad that they're not as you guys seem to have issues with tyre supply on Nittos and others from what I've seen. If you guys had access to those two we'd never see any down here. Having said that, I've imported tyres from the US amongst many other items and I can't see why the reverse couldn't happen?
The Nittos are a very nice tyre too. Best value for money by a longshot imho.
Yokos
Hankooks