The tires you use for training and racing is a very personal thing. There are lots of good tires out there that grip the trail and provide protection. But in my experience, everyone seems to mix and match tires. At races you'll hear, "I like X brand on the rear and Y brand in the front." I'm always puzzled by this as it seems brands have their signature tire for XYZ conditions, but if it's ABC, you're out of luck.
That is exactly what I love about Specialized. You're always in luck. They've got a tire for every condition, and a few different casings if you need a different level of protection. If it's dusty and dry, the Renegade is super fast and can rail corners. In damp conditions the FastTrak is the go to with a little extra bite in the damp conditions. If it's out and out muddy, slap the Captain tires in and don't worry about traction. And if it gets gnarly with a lot of rocks, just put one of those tires on with Specialized's "Control" casing and you're protected.
I've loved running these tires. My favorite combo is a FastTrak up front and a Renegade in the rear. Those two coupled together really seems to be the best of all worlds, and it's an incredibly fast setup with low weight and rolling resistance. For all day races like NUE, this duo can't be beat.
Specialized has engineered and impressive lineup of tires for all riding conditions. And it's great to have the peace of mind that for any situation, you're covered by Specialized tires.