We have had really good luck with GVC Suh, and our Suh son, ZNT Moves Like Jagger, seems to be working very well on commercial and straight Angus type cows. All of our calves out of Suh have been in the 70-90's for birthweight. None over 100#. Moves Like Jagger has been thowing calves mostly in the 60-80's, but that has a lot to do with the fact that he is out of our ZNT Jenna donor cow. She is the same cow that produced ZNT Montego Bay.
Good luck with your new purchase. I am sure you will be very happy with the calves he produces.