Geax Datura Lite Tire's tall, widely-spaced knobs provide grip for confidence-inspiring traction in nasty conditions. Wet muddy, and loose trails are nothing to worry about, thanks to the soft compound and traction-enhancing micro-sipes in the top of each knob.
Strengths: Super grippy! Started off with a Datura on the front and Gato on the rear! This setup was very nice but the Gato didn't have quite enough tread depth for the wet NW trails. Put a Datura on the rear as well, both 2.1" on a GT Force with 140mm front and rear travel. Rolling resistance is surprisingly low considering the giant knobs. The Datura accells on climbs, never losing traction! Amazing setup for wet/muddy/loose terrain!
Weaknesses: There is a small tendency to slip a bit on wet roots but then again don't they all. Wet rock traction is not bad however.
Amazing deal at $18 a tire on cyclesport.com! Even at full retail, this is a great NW tire.