Well I like the Movie ones more!!I do not like te idea of the statues having "Gimli" look,it is enough that the entire Erebor Faction has the "Gimli"look and te others the original EA statues I never liked them,they looked kinda funny and weird in my eyes,so my Vote is for the Movie Dwarven Statues!!
I agree, a monumental statue that represents a realm or a king/lord/leader has to be majestic, perfect and significant; like all the perfect and wonderful monumental statues of Greek Classicism and Neoclassicism
So, Erebor, the most powerful dwarven realm in Middle Earth at that time, deserves majestic statues of armoured Dwarves soldiers with a kingly and authoritative aura (military strength and authority at the same time)
One of the examples that comes to my mind is the representation and statue of Athena in Vienna, that symbolises war, authority, majesty, spirituality and divinity at the same time