it seems like the "tri year" 67~69 darts are the most sought after along with the 2nd gen 67~69 barracuda.
the barracudas have and will always be in that upper echelon just due to rarity alone. however, they're always viewed through a different lense than dodge or the other plymouths because they were marketed and seen as upper class and more sophisticated. barracuda's got deluxe interior and darts got rubber floor mats. you still got all the big bad performance stuff, but it was classy.
but there's a dynamic at play here. while everybody pines for the uptown girl, dreams about that 440 'cuda or a drop top S car the fact is most of them grew up with darts. mom drove a 4dr when you were little, uncle rico had a 340 4spd car, that shitty 4dr /6 car got you thru college two moves and three bad girlfriends, there was that one guy with the bad *** big block dart that nobody dared mess with that cruised the dairy queen on saturday nights.
currently we're seeing a market shift in what's desirable. and the demographic that drives the market is the one that has the money, so now all the olds that grew up with darts and dusters are cashing out their IRA's to get what they wanted back in the day. what they grew up with. that car they had to sell or the one they never could build or afford back when. nostalgia is a market force to be reckoned with.
right now, dusters are having their moment. in a few years, who knows? maybe it'll be 4dr vals?
for me though, it'll always be 67~69 barracudas and darts. in my mind those are what established the line and embodied every facet of what could be and came to define what an A body would be.