Based upon my knowledge of Remo heads, the Evans Reso7 seems similar to the Remo Diplomat, whereas the EC is similar to the Remo Ambassador. The thinner the resonant head, the less resonant it will be, at least in theory. Coating can kill resonance even more. Though the coating adds mass, it also acts as a muffler. Thus, if you want minimal resonance, select a very thin coated head. If you want maximum resonance, go with a thicker clear head.
Of course, if the 10 mil you're considering has built-in rings, they will dampen the head's resonant capacity, negating its additional mass.