Black and B/W deck needing help

While I have, to a certain degree, been playing Magic for a few years, I've never really tried to get onto the competitive scene. I have two main decks that I'd like to put forward- one I've been working on for months, and the other I put together just today.

My mono-black zombie deck was an idea i began toying with this summer. I've always loved tribal designs, and so I've been experimenting with this one with a fair amount of interest. However, it still seems to have a few flaws, and lacks a total structure. You can find it here: http://deckbox.org/sets/462184

My infect deck was actually inspired by my first 'good' deck (well, I thought it was good). However, looking back on it today, I have, in attempting to remake it, not used any of the cards originally in it, so I believe we may as well call it a new idea. In any case, I don't know whether or not the balance is right here, and am looking for suggestions on how to improve it. You can find it here: http://deckbox.org/sets/551074

Both of these are intended to be modern decks, and while they don't need to be tier 1, FNM winning, I'd like to be able to go to an FNM and return home with a couple of victories under my belt. However, I'm not loaded, so an economy build (to a certain degree) would be a plus.

Thanks in advance for your guidance.

Last edited by Darksteel (2013-12-11 23:25:08)