I've been experimenting with tires lately. I was looking for something that would corner well, performed on rocks and roots, and would hold up in wet weather. In a nut shell- a good tire for West Coast riding.
Well, ladies and gentleman, I found what I beleive to be the perfect combination. On the front tire (where you want the most grip and cornering traction) I now use a Kenda Nevegal on the front. This tire is AMAZING. It has awesome cornering traction, is great for technical riding (wet or dry) and the extra width (it's a 2.1) makes you super fast on double track descents. I love this tire. My descending, single-track riding, technical riding, and cornering has improved with this tire. And the extra width doesn't seem to slow me down on the uphills either - I've picked up speed there too!
On the back I use the tried and trusted Michelin XTR AT. My friend Kate got me onto the Michelin band-wagon and i have to admit that they make a good tire. They aren't as good in the corners as the Nevegal but they perform well in any weather and for any terrain. They are perfect on the back.
So this is the set up I'll plan to use for Nationals. Depending on how much steep slick rock climbing we have in the race i may opt to use Nevegals on front and back ... we will see!