I haven't tried EMP yet, but I do have some Hearth & Home "Daybreak", which was intended to replicate EMP's characteristics and flavor - and I like it a lot. I've been comparing and contrasting other Latakia/English blends in order to distinguish the subtleties, and Daybreak is on the lighter end, just as EMP is described (as well as Frog Morton, which I've just recently tried) - perhaps it is the perceived lack of Latakia flavor that is causing your negative initial reaction.
As for the question of whether to pack it in or keep trying, it depends greatly on one's goals. If your goal is to find a blend that you enjoy, then by all means pack it in if something just doesn't work for you after a tin or two, and try something else. Life's too short to spend a lot of time being miserable on purpose. :D
On the other hand, if your goal is to understand a particular blend (even if it's one you don't personally like that much), then perseverance through the initial adversity is a good thing. I don't particularly enjoy hip-hop or rap music, but I have learned to appreciate its place in modern popular culture, and I know enough about its history to understand why it sounds the way it does. And now that I've done that, I can get back to my beloved 1970's hardcore punk... :D