I'm still going with cuckoo marans, all of them. Those legs are just too pale to be BR. By the way, the ones that look less defined/more black and have darker marks down the front of the legs usually turn out to be pullets. More defined/more white and less leg markings usually end up cockerels...
I'd say cuckoo marans, based on your description. Could be either, of course, depending on how well/poorly bred, but generally, CMs have pinkish-white legs and blurry/splotchy pattern, while BRs have yellow legs with more defined barring.