I rarely like drafting CB in the first.
Doesn't mean that 1st round CBs aren't good, obviously. Just means that some things that are intangible often make a better corner.
Josh Norman
Asomugha
Sherman
Slay was a second.
So if it's a first round guy I need to know how committed he is, and if there might be another position available where you're less likely to hit in later rounds. Edge is harder to hit. Left tackle is almost impossible.
For me this draft ... CB is Koolaid ... as he has the feet, hips, technique, AND production. I'd likely take the Wolverine over him (Will Johnson) but he's a true sophomore.
Cooper Dejean is the other ... and while he has less upside than Koolaid ... whatever upside he has will be maximized because of his work ethic and character, and he also is a punt returner who is legitimately dangerous. Only 3 guys better IIRC.
Now, after those two ... there's a dropoff and no reason to take one until the 3rd