I've tried many tires. The latest Hans Dampf tires are very good almost everywhere, but they are costly and wear faster than most. Still among my favorite tires.
The old Nobby Nic and Rocket Ron tires were terrible--fast wearing, fragile and just not good.
The new Nobby Nic is pretty good. Tried it up front and liked the HD much more. NN is now being saved for back tire.
With Continental, to get the best bang for buck, wear and traction, make sure to get the Black Chili (German made), protection, tubeless ready versions.
The Mountain King is a mid-volume all-around tire. Provided you get the correct model (see above), the 2.4 is nice up front and rear can go 2.4 or 2.2 (all assuming you prefer larger volume tires)
The X-King look good and are light, BUT I had two of them and the sidewalls on both tore in the first three rides. I mean 1" tears to immediate flat. Apparently that's not terribly unusual for the X-King
The Trail King is a great sleeper tire! It's a bit heaver than the above, but it's huge volume. The 2.2 TK is as big as the 2.4 MK. If you don't mind a few extra grams, a 2.2 or 2.4 TK up front with a 2.2 TK in the rear is a very sweet combo.
I managed to purchase a couple of the TK 27.5, 2.4, black chili, apex, tubeless ready tires at Sea Otter for $35 each. Bigger than the Hans Dampf, seem to last at least 3x longer (yes, really 300% longer or more) and hook up as well.