Ardents not too shabby at all they have tall flexible sidewalls so they are a bit slow to get going but otherwise they take the knocks and take the sting out of the trail. Roll quite well on the rear and hook up surprisingly well providing the terrain is dry-ish.
CrossMarks are not dissimilar but they are lighter and have a tauter feel. Not happy at all in wet/greasy conditions
Minions also excellent in their own way but a kilogram is a lot of rubber to be pedalling round. 2.35 DHF is the lightest but the tractor tread on the low-volume carcass always looks and feels like a mistake in the Maxxis factory, although it works OK on the back.
Mountain Kings no worse than any other tyre re punctures although the non-Chilli versions are a bit plasticky. If you are OK with them there's no reason to change.