For offroad I still like Panaracer Fire XC Pro's. I have found them to be excellent all round tyres and they cope with pretty much everything, even thick mud (up to a point). In really gloopy conditions I use Panaracer Trailrakers and they have taken me though thick mud that was well over the rim and up steep muddy climbs.
I have tried a few of the Schwalbe range and found them all pretty competent, although I am not a fan of the Nobby Nick's as I found on two different bikes, they have a nasty tendency of losing traction at the back under heavy braking. This may suit the modern riders, but I don't care for it.
There is almost too much choice these days, which is why I've stuck with the Panaracers, as I know what they are like and I can often get them cheap on ebay
"Try not to punch any clowns"