I've been running tubeless with Stans for about 3-4 years now. I run King disc hubs, double butted spokes, brass nipples, Bontrager assymetric tubless compatible rims. I like Hutchinson Airlight Spiders in a 2.3. Yes, I race on these. I also have Race light discs, and Race light clinchers, Tubless compatible.
I run a 2.0 Specialized Roll-X tubeless rear and a 2.15 IRC Mibro tubeless front on my other trail bike. (The Roll-X is bigger) These are heavy but hard to distruct.
I have used a lot of different tires. I will probably try some of the new type specific Michelins next. Medium-heavy but hard to distruct.
The Cake is a nice all around trail and race bike. I have it down to about 26 pounds. Not bad for a 5inch travel bike. My gripe about the Cake is the chain suck. I've eliminated the problem by taking out the spacer on the inboard bearing. But, this puts the outer chainring dangerously close to the frame. I haven't had issue with this yet but all it would take is a major hit and it would put the ring into the chainstay. It is pretty easy to saw a hole through Al. It was also spec'd with XT/XTR components. It was all the rage when it was new. I started having shifting problems, discussed it with those in the know, and discovered the low normal XTR derailleurs don't work well in the dirt. Switched to XO, I'm totally sold on XO shifters and derail. As one of my friends says, "they just work."
Specialized makes some nice stuff I guess. I personally am wary of the cables running under the bottom bracket, good place to pick up mud, especially if you are running an XTR low normal derail. I've also seen several of those Al cable noodles get seperated from the frame, (under the bottom bracket,) by a rock, etc.
I would stay away form the high dollar multi pivot frames, like some of the Intense, Santa Cruz models. Unless, you want the bling factor and like replacing pivots. I would consider an Ellsworth Truth for XC type/24 hour racing.