In 2011, both the Titans and the Vikings took this chance on two young quarterbacks. The Vikings Christian Ponder and the Titans Jake Locker. Both of those guys were pegged to be drafted in the second round yet they were both drafted in the top 12. This tactic did not work out for the Titans as they missed out on drafting JJ Watt and Ryan Kerrigan as Jake Locker struggled keeping the starting job and had a below average 2012. For the Vikings however, drafting for need worked out as Ponder led the Vikings to a playoff berth and seemed to be improving as the season goes on.
When drafting, you must always take need into consideration and do what is best for the franchise at the same time. This is why being a NFL GM is one of the hardest jobs in the world as they have to make this very difficult decision every year. They must try to find the perfect balance. In my opinion, unless a top ten caliber player falls to the Bengals; if a linebacker/safety is still undrafted and in the top ten on their big board when their pick rolls around you take them.