Just picked up a used 5D Classic off craigslist for $700. I had been seeing them pop up regularly with battery grips for around $900-$1000. $700 put me over the edge, as I'm sure I can resell with minimal losses once a 5D MKIII or the alleged 3D surface.
So far it's been a dream to finally shoot FF. Been shooting with a 7D for about a year, and the only real complaints about going back in time 5-6 years is the subpar color reproduction, menu functionality, and I just don't know how I ever lived with these old LCD's! I'm so used to being able to check accurate color balance, lighting, and focus on my LCD now. You really have to put some faith back into it, and so far the 5D delivers.
I purchased some nice primes during the B&H holiday sales, and the 5D really brings them to life over the cropped 7d. I will continue to use the 7D for general purpose photography, but the 5D will definitely be my go to camera for portrait work.