OK then, how about the Metzeler Roadtec Interact Z8? I think I might give them a try when my OEM tires need replacing.
http://www.motorcycle-usa.com/402/1...Metzeler-Roadtec-Interact-Z8-Tire-Review.aspx
On paper the Z8's appear to be a totally suitable tire for the NT. I am not aware of anyone using them on the NT however so its hard to say exactly how they would handle or what their life would be. I plan on using the PR3's for my next tires based on the positive reports they have received from this group.