Feedback on Zombie Covers Please!

As some of my readers who have been with me over the years will know, I am writing a zombie book. Correction, a series. Correction, have written. The finished manuscript is being run past certain guinea pigs for feedback. Now I need some assistance in covers. I have been working with a friend to create a striking cover, and we have two options. They are busy, and purposefully so. First, I thought they were too busy, then I fell in love with them. I think they would grab your attention really well. So the question is which colour, red on black or vice versa?

It's all pretty exciting to finally get close to getting this project up and running. Of course, I then have to write the second in the series...

If there is  further reader here who likes the genre and can read a book within a few days, let me know, and I can send you a copy to quickly read to get your opinion of character, flow and whether you would buy the second in the series. Would it keep your attention and enjoyment?

You can read the prologue here (though this might be changed a tad).