Wait 6 months and 11-14 values will go down.
I don't see 11's dropping more than a sliver below the 20 mark with the 15's on the horizon. Right now with winter looming I think they aren't going to get much lower, and then with spring, their prices probably won't go back up at all because of the new model year.
I was dead-set on picking up an 08/09 GT vert again, then I noticed that 10 GT verts were in the super low 20 range. Abandoned Vert as a requirement, and 3-4 11' GT's popped up within reasonable distance... As much as I want a convertible, the 5.0 seems to have really proven itself as a stout/capable motor, and don't really see a reason to avoid it. The style has actually grown on me.
Specifically 2 caught my eye,
The one in the pic above, which has 60k on the clock, and is a Premium car, but with no options. (So Leather, Shaker, manual, that's it).
Then there is another which is Black on Black, 40k on the clock, And is a loaded Premium car (GPS, Backup camera, seat accents, Projectors).
Both are priced the same, BUT the second car has an accident with a guard rail back in early 2012 (Car has a Saleen grill and someone painted the front calipers), but Carfax indicates it as 'minor', and said no airbag deployment... but obviously that makes me leery. I'm a cheap ass, but I don't think I'd take the gamble on a repaired car (even if it looks perfect), even with all the extra content and fewer miles.