I own both.
Original Costume
+ better quality suit
+
better cape and clips (permanent)
+ pneumatic mangler
+ better ankles/boots
- weak *** knee joints
- mouth paint job isn't as nice as modern figures
Toy Fairs Exclusive
+ swappable mouth plates
+ better bruce Wayne head (DX 12 kills it though)
+ survival suit gear w/ extra belt and straps
- poor quality suit with dents and deformations (especially on the sides)
- painted suit that peels off without touching
- broken ankles with plastic that is brittle and deteriorates
- HORRIBLE cape and clip functions
I'd go with OC, it's a solid release and a more durable figure.
- OR -
Just wait for Hot Toys to make another one . . .
Check out that desktop screen.