I'm looking for a dart, can't decide what year!

Hey A-Body enthusiasts! I'm in the market for a Dart. I originally had my hopes set on a 67-69 318 car, but I recently came across a couple 70 and 71 Darts.

I can't decide the best year to get. Will I be kicking myself if I go with the 71 vs the 68 or 69?

I'd love to hear your guys recommendations... what do you think the pro's and con's are for each?