Have not ridden the Reliks (yet) but have ridden a bunch of others and the cells are the most comfortable boots i have had on. They are very stiff which took some getting used to but I do feel a lot less likely to pop a knee while riding in them. (which I have done 2 times in other softer boots.)
There is not enough I can say good about the cells. I am sure the Reliks are as nice so it will be the decision on soft/loose feel or tight/stiff, that is a too each his own thing.