Pros: Low rolling resistance, great at cornering and moderately technical climbing. Easy to install and fairly lightweight.
Recommendation: If you're an XC rider and like to go fast on the trail, these tires are for you. Just the right tradeoff between resistance and bite, these tires are perfect for endurance riding and racing. Won't get clogged with mud easily either!
Recommendation: If you want to race XC get some fast tires!