I highly recommend the Schwalbe tubeless tires with Stan's sealant. I ran a set of Rocket Rons for a while, and am now running some Nobby Nics. I ride in a lot of New England type roots and mud, though, so I don't know if those tires would be ideal for you. Maybe check out their Racing Ralphs; a lot of my riding buddies who race use those. They're $$, but worth it, IMO. Get the snakeskin EVO versions if you need a tougher sidewall.