Definitely Bovine Elite. Carl does a great job. Also when I went through it, they said that often AI on beef cattle is slightly different from dairy cattle, which is what most of the others in Texas use to teach on. I mention as well that Bovine Elite allows (at least they did 3 years ago) you to return to the classroom sessions, if room allows, free of charge.
Good luck -- you'll certainly get a great education there.