Sean McQuillenwrote a review of Panaracer Fire XC Pro MTB Tire - 26x2.1in on April 8, 2009
I've used the Fire XC Pro 2.1 for a long time. It's been a great tire on all surfaces that I've had occasion to use it on - dry hardpack, wet and slick midwestern woods, loose/rocky Moab soil, even on grass dual-slalom courses. The rounded profile provides excellent predictability going into corners, and the stiff side tread provides great hold when you lean it over a little too far.
And the red rubber on the sides looks pretty cool, too.