edit: What SoxLegacy just said.
To add my 2 cents: I guess it comes down to who DD prefers, the guy with the bigger upside with the bat (AB) or the guy with the longer track record of success in the minors (MM). Having both presents DD with a really nice trade chip while maintaining organizational depth at a key position. Right now, I'd keep Benintendi over Margot, simply for the bat.
To add my 2 cents: I guess it comes down to who DD prefers, the guy with the bigger upside with the bat (AB) or the guy with the longer track record of success in the minors (MM). Having both presents DD with a really nice trade chip while maintaining organizational depth at a key position. Right now, I'd keep Benintendi over Margot, simply for the bat.