Kalina,
What kind of trails are you expecting to ride ? Smooth singletrack, gravel road, technical ? I overlooked all of your options and for the same price i think you should look for 29′ hardtails that would come better equiped. A quick personnal tip concerning Shimano components, make sure you have at least Deore or better, especially for derailleurs.
If you really want double sus, i think you should pay a little more for better components.
If you really really want double sus and want something in your list, i think the Anthem is the best bang for your buck.
Avoid the Norco, Kona and KHS.