With both companies you tend to get optimistic measurements and ratings, something to be mindful of if you're comparing their spec's. GE products will be newer tech, Earthquake really hasn't updated anything in many years. They do share a design ethos in that both aim for room friendly...
Another potential option to consider would be Harbottle Audio. Nathan sources a lot of his drivers from Harbottle so they share the same primary benefits. Harbottle focuses their engineering a bit more on producing the low end though so if deep bass is what you're after they might be a better...