I like Stevan Ridley, But there's a reason the Pats are showing a lot of interest in Doug Martin. Maybe they don't think Ridley can carry the load or maybe there's another reason. When it comes down to it, I love watching good blue collar hard nosed RB play and for that reason, I'd be fine with a Doug Martin pick. I also don't think we should we should be drafting defense just for the sake of it. There's quite a bit of 2nd/3rd round talent being projected at the bottom of the first and I don't think we should be drafting such poor value.
BTW, that link I gave on Martin was from a guy, Matt Waldman, who has Marvin Jones, who we both like, as his third rated WR so I think he's got really good credibility.