Abram is my favorite in terms of on field demeanor. He's mean and you'll know it. He flung Irv Smith to the ground several times in their matchup. Ditto Hockenson, actually! Abram is the ideal box safety who blows up the run and actually does a surprisingly solid job in coverage. I love watching him play. Incidentally, I haven't been this excited about a safety since Chung (yes, I liked Reid last year, and Obi has intriguing potential, but Abram . . . Whoooeee!).
Rapp seems more versatile, however. He can play all over -- box, deep, slot -- and he's got a cerebral approach with lightning fast processing and minimal mistakes. He's not the big hitter Abram can be, but he almost always makes the right read and gets to the right place in a hurry. Perfect Patriot. If I had to play GM, I'd take Rapp due to snap to snap consistency.
I still like Abram better, though.