which cam?

Im going to be running the magnum heads and i wanted to know what cam to run. Xe274 or the 268. On Camquest it showed that the 268 made more torque and at a lower rpm, while the 274 made about only 10 max more hp and the heads will be ported later so im wondeing what i should do becasue i saw that mancini racing does offer a magnum head spring that will handle .525 plus up to 600 so im not that worried about the springs jsut want the best cam. More torque or HP