So, I'm already subscribed to Kamikaze, so I should probably second that reccomendation. Though I am way behind on reading it, as I am usually all comics. And I've started following Heartland, as anything based on Stalker is relevant to my interests.
I'm quite partial to Silver Wolf, which follows someone who put on a suit of armour to survive a zombie outbreak in a medeival setting, and how they're managing to survive, and eventually meeting a friend who had a similar idea.
If we're going for not on this website, let me tell you how much I love KILL SIX BILLION DEMONS. They've made a world which I feel is impossible to not get sucked into, an aggregate heaven of all religious belief, decayed. The pure depth and detail are what make me love it. (And I like the art.)
Finally, I have to reccomend my own POST HOC, which is a post-apocalyptic fantasy set in the early modern period, rather than modern day.It's taken heavy influences from manga like Blame! and Berserk, though not at all in the art style, which is certainly a work in progress and way behind much of what others here have produced.