I'm on a wide screen so its really hard to comment on the cattle, but it does look like you have a fairly decent heifer on your hands. As for Hereford AI Sires, I'd call the AHA and have them send you a AI Book. It is really hard to find good Hereford bulls in some of the semen suppliers. I think Steered has a good idea on the Genex Sires. I like most of them. Are you wanting a show calf? Or more practical, economical heifers to turn into brood cows? I like K16 and he will probably be the first bull I use AI. But, if you're looking for a show calf look up STAR Bright Future. If mature wieghts and frame don't really concern you he could really be what your looking for. Reload is a good bull, but I don't think he's the best. I have also seen some good calves out of BR DM Channing. I'm pretty sure these bulls' semen rights are still owned by their owners so you'd have to buy the semen from them.