I think my decision to raise or limp behind in that spot is HEAVILY dependent on my image for the day. If I have a good image and think I can get away with making moves post-flop I'm more likely to raise there, because I don't feel my winning is heavily dependent on actually making a decent showdown hand.

If I have a horrible image then I'll probably just limp behind and keep the pot small and wakeup postflop when I hit something.