I ran both the NT01 and the RA1 back to back at Fontana. Both with very similar lap times. The Nitto felt a bit more stable (especially on the oval) and just as sticky if not slightly more than the Toyo.
I too like that they don't need shaving and they seem to last a long time (ran the entire weekend (TT) but 2 sessions and they still have tread and plenty of laps left in them). They are also a little cheaper than the RA1
I will be using the Nitto's going forward.
Others experiences may vary
