As far as I know, care for both is about the same...as far as temperments...BRBs are pretty much infamous for their horrible attitudes...BUT mine has never even struck at me. Just like any snake in this hobby...some are nicer than others. I have definitely heard of more mean BRBs than nice ones though. I keep mine in a tub with a hide, damp moss box, and water dish, and she's perfectly happy & healthy. A lot of people STRESS that you need to keep them in super high-humidity environments, no exceptions, or they will suffer and die, etc., but with all the experiance I have had with mine, I have kept her in basically the same type of enclosure for a few years now, and she's never had any skin problems, never refuses a meal, always sheds perfectly, and is nice and handleable to boot. Can't argue with that!
But as far as choosing between the two, I say BRB all the way.