Flat Black is the way to go. And for gosh sakes, don't buy cheap paint. Buy the most expensive paint you can buy.
High quality paint solves 50% of all painting problems.
And, by the way, spray painting open basement ceilings and joists with flat black is currently the "in" and fashionable thing to do among upwardly mobile millenials. So, you are not going to hurt the value of your house.