If I was picking between the two, I'd go with Mo Better. I've seen quite a few of his calves, and they are just about as consistent as they come. I'm not saying they are the showiest, coolest calves, but they are TANKS. They are all just really deep, soggy, functional, and sound. I've never used Mo Magic because A) He isn't really proven. B) He's a halfblood and I have a bunch of percentage females and C) His dam is an NH carrier. But obviously Mo Magic is a Mo Better son, you I guess my theory is why just use his more proven sire...but time will tell on Mo Magic.