WTB Trail Boss, I can’t stress just how good a rear tyre this is! Way more grip than it looks like it should have, in all conditions, and faster than anything else out there short of a full on semi slick. Even comes in either a lightweight or a dual ply carcass option. Only criticism is it seems to be wearing at least as fast as a Maxxis, where some other brands last ages, but I’ll take that considering how good it is elsewhere.
Other option would be a Geax/Vittoria Goma. Like an Ardent only faster, grippier and harder wearing! Tread is a bit shallow to bite well in the mud, but it finds grip just about everywhere else and rolls faster than it looks.
Going to try out a Minion DHR2 as soon as I can get hold of one though, been hearing very good things from some riders much faster than I.